Question

A circle of radius 7 cm is cut out from a square shaped metal sheet.If the side of the metal is 21 cm, Find the area of left over metal sheet.​

Answer 1

Answer:

Step-by-step explanation:

So,

area left is

$= Ar(square\;\;sheet)-ar(circle)$

Area of square sheet:

$=(side)^{2}={21}^{2}=441cm^{2}..................(i)$

Now, area of circle:

$=\pi r^{2}= \frac{22}{7}\times7\times7=154cm^{2}$.....(ii)

Now, subtracting both  areas to get the remaining area:

$441cm^{2}-154cm^{2}=287cm^{2}$

$Learning\;\;together\;:)$

Answer 2

Answer:

287cm

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