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.
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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..!
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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