.A piece of wire in the form of
abrectangle of 8.9cm long and 54 millimetre broadis reshaped and bentin the form of circle find the radius of circle in millimetre.
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Answer:
Steiven the length of the cardboard sheet is 145cm and breadth is 32cm
hence area of the cardboard=l×b
=145×32
=4640cm²
diameter of one circle which has been cut out from the sheet=8cm
therefore radius=8/2
=4cm
area of one circle=πr²
=22/7×4×4
=352/7cm²
therefore area of 42 such circles=352/7×42
=14784/7
=2112cm²
thus area of the remaining sheet=4640-2112
=2528cm²
hope this helps...!
p-by-step explanation:
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