A rectangular acrylic sheet is 36 cm by 25cm

Asked by admin @ in Math viewed by 309 People

A rectangular acrylic sheet is 36 cm by 25 cm. From it, 56 circular buttons, each of

diameter 3.5 cm have been cut out. Find the area of the remaining sheet.please help urgent

Answered by admin @


Area of remaining sheet = area of full sheet-area of all circles
area of full sheet =l×b
=36×25
=900cm^2
NOW, d=3.5cm
r=3.5/2cm
area of 1 circle=πr^2
=22/7×3.5/2×3.5/2
=9.625cm^2
area of 56 circles =56+9.625
=539cm^2
area of remaining sheet =900-539
=361cm^2

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