Math, asked by acifeena, 1 year ago

an iron washer is made by cutting out from a circular platr of radius 5cm,a concentric circular plate of radius 2 cm. find the area of the remaining portion.

Answers

Answered by Anonymous
26
hii!!

here's ur answer...

radius of the circular plate is 5cm.

area of the circular plate = πr²

= 22/7×5×5

= 550/7cm²

now, the radius of the circular plate which is being cut from the larger plate is 2cm.

area = 22/7×2×2

= 88/7cm²

therefore area of remaining portion of the plate = 550-88/7

= 462/7

= 66cm²

hope this helps..!
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