A rectangular sheet of a cyclic is 34 cm by 24 cm. From it, 64 circular buttons, each of
diameter 3.5 cm, have been cut out. The area of the remaining sheet is
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1
l×b
64×3.5
good question
64×3.5
good question
vihari:
please tell answer
Answered by
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r=d/2
r=3.5/2
r=1.75
Now,area of one button =πr^2
=22/7 ×(1.75)^2
=22/7 × 3.0625
= 9.625cm^2
therefore,area of 64 buttons = 9.625 × 64
= 616 cm^2
now,area of rectangular sheet = lb
= 34×24
= 816 cm^2
therefore,are of sheet left = 816 - 616
= 200cm^2
r=3.5/2
r=1.75
Now,area of one button =πr^2
=22/7 ×(1.75)^2
=22/7 × 3.0625
= 9.625cm^2
therefore,area of 64 buttons = 9.625 × 64
= 616 cm^2
now,area of rectangular sheet = lb
= 34×24
= 816 cm^2
therefore,are of sheet left = 816 - 616
= 200cm^2
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