17 3 surface area of pyramids and cones answer key
Asked by admin @ in Mathematics viewed by 384 People
Hw 31 surface area of pyramids and cones
Answered by admin @
Answer:
1)LSA=219.91 m^2
TSA= 298.45 m^2
2)LSA=785.39 ft^2
TSA= 1099.55 ft^2
3)LSA=527.78 in^2
TSA=728.84 in^2
4)LSA=480.66 mm^2
TSA= 735.13 mm^2
5)LSA= 56 cm^2
TSA= 72 cm^2
6)LSA=261 in^2
TSA=391.5 in^2
Step-by-step explanation:
lateral surface area(LSA) of cone is calculated by: πrl
Total surface area(TSA) of cone is calculated by: πrl + πr^2
where r is radius of cone
l is slant height of cone
Q1)
r=5m and l=14m
Putting value in formula:
LSA= πx 5x 14
= 219.91
TSA= πx 5x 14 + π(5)^2
= 298.45
Q2)
r=10ft and l=25ft
Putting value in formula:
LSA= πx 10x 25
= 785.39
TSA= πx 10x 25 + π(10)^2
= 1099.55
Q3)
r=8in and l=21in
Putting value in formula:
LSA= πx 8x 21
= 527.78 in
TSA= πx 8x 21 + π(8)^2
= 728.84
Q4)
r=9mm and l=17mm
Putting value in formula:
LSA= πx 9x 17
= 480.66 mm
TSA= πx 9x 17 + π(9)^2
= 735.13
Q5)
LSA of Pyramid is given by= 1/2(p)(l)
TSA of Pyramid is given by= 1/2(p)(l) +B
where p is perimeter of base
B is area of base
and l is slant height
Finding p= 4.length of each side (as it is square base)
=4x4
= 16
finding B= s^2
= 4^2
=16
Putting values in formula:
LSA= 1/2(7)(16)
= 56
TSA=1/2(7)(16) + 16
= 72
Q6)
Finding p= 5.length of each side (as it is Pentagon)
=4x8.7
= 34.8
finding B= 5[1/2(b)(h)]
= 5[1/2(8.7)(6)]
=130.5
Putting values in formula:
LSA= 1/2(34.8)(15)
= 261
TSA=1/2(34.8)(15) + 130.5
= 391.5 !
Similar Questions
Unit 11 volume and surface area homework 3 answer key
Asked by maham237 @ in Mathematics viewed by 1585 persons
Area of Composite Figures find the area of each figure. found to the nearest hundredth where necessary.
Find the surface area of the cone use 3.14 for
Asked by admin @ in Math viewed by 361 persons
Find the surface area of the cone. Use 3.14 for pi
diamter is 8height is 7give right asnswer and will mark as braineslt
How to find the surface area of a regular pyramid
Asked by admin @ in Mathematics viewed by 308 persons
Find the surface area of the regular pyramid.
10 yd
9 yd
7.8 yd
lyd?
How to find the surface area of a cone formula
Asked by admin @ in Mathematics viewed by 326 persons
The surface area of a cone is found using the formula SA = Pir2 + Pirl. Describe what each part of the formula represents and how these parts are used …
14 2 surface areas of prisms and cylinders worksheet answers
Asked by admin @ in Mathematics viewed by 340 persons
What is the surface area of a prism with a base of 17.2m, the width of 3m and the height of 5.5m
12 2 surface areas of prisms and cylinders worksheet answers
Asked by admin @ in Mathematics viewed by 308 persons
What is the surface area of a prism with a base of 17.2m, the width of 3m and the height of 5.5m
Unit 8 right triangles and trigonometry homework 3 answers key
Asked by admin @ in Mathematics viewed by 569 persons
Unit 8: Right Triangles & Trigonometry Homework 4: Trigonometry: Ratios & Finding Missing Sides
11 3 sector area and arc length answers with work
Asked by admin @ in Mathematics viewed by 301 persons
PLEASE HELP 30+ POINTS
Find the missing sector areas and arc lengths.
Unit 3 parallel and perpendicular lines homework 2 answer key
Asked by maham237 @ in Mathematics viewed by 558 persons
Unit 1 geometry basics homework 3 angle relationships answer key
Asked by maham237 @ in Mathematics viewed by 2577 persons
Unit 10 circles homework 3 chords and arcs answer key
Asked by admin @ in Mathematics viewed by 1245 persons
please solve the question. unit 10: circles homework 2: Central angles, arc measures, and arc length.
Unit 6 exponents and exponential functions homework 3 answer key
Asked by admin @ in Mathematics viewed by 497 persons
Name: cuiusly thens
Date: _9-1119Bell: BeratUnit 6: Exponents & Exponential FunctionsHomework 1: Adding, Subtracting,& Multiplying MonomialsDirections: Simplify the following monomials.1.-3a + 52a2.-12x²y – 3x²y3. 16ab3 – 43ab34.-15m - (-15m)5. 11c2d? …
Key privileges included in both the english bill of rights and the us bill of rights include
Asked by maham237 @ in History viewed by 321 persons
Key privileges included in both the English Bill of Rights and the US Bill of Rights include
protection against unusual punishment and the right to trial by jury.
the rights …
All things algebra unit 7 polygons and quadrilaterals answer key
Asked by admin @ in Mathematics viewed by 8156 persons
Name:
Unit 7: Polygons & Quadrilaterals
Homework 5: Rhombi and Squares
Per:
Date:
(2.5
CD =
** This is a 2-page document! **
Directions: If each quadrilateral below is a …
A triangular pyramid is cut by a plane. in which case is the cross section a quadrilateral?
Asked by maham237 @ in Mathematics viewed by 309 persons
A triangular pyramid is cut by a plane. In which case is the cross section a quadrilateral?
A) when the plane is perpendicular to the base and passes through the …
Most viewed questions in Mathematics
Unit 6 similar triangles homework 2 similar figures answer key
Asked by maham237 @ in Mathematics viewed by 18351 persons
All things algebra unit 7 polygons and quadrilaterals answer key
Asked by admin @ in Mathematics viewed by 8156 persons
Gina wilson all things algebra 2016 answer key unit 11
Asked by admin @ in Mathematics viewed by 5773 persons
Unit 1 geometry basics homework 4 angle addition postulate answers
Asked by maham237 @ in Mathematics viewed by 3932 persons
Unit 6 exponents and exponential functions homework 8 answer key
Asked by maham237 @ in Mathematics viewed by 3249 persons
The manager of a vacation resort believes that the ages
Asked by maham237 @ in Mathematics viewed by 2921 persons
What is 271 403 rounded to the nearest ten thousand
Asked by maham237 @ in Mathematics viewed by 2788 persons
Unit 1 geometry basics homework 3 angle relationships answer key
Asked by maham237 @ in Mathematics viewed by 2577 persons
Why would a prism beat a sphere in a competition?
Asked by maham237 @ in Mathematics viewed by 2477 persons
An artist sells a painting for 20.50 but uses 5.75
Asked by maham237 @ in Mathematics viewed by 2427 persons
Unit 4 congruent triangles homework 1 classifying triangles answer key
Asked by maham237 @ in Mathematics viewed by 2416 persons
Unit 4 congruent triangles homework 2 angles of triangles
Asked by maham237 @ in Mathematics viewed by 2071 persons
Compare the values of the 2s and 5s in 55220
Asked by maham237 @ in Mathematics viewed by 1794 persons