Question

from a square sheet of each side 7 cm a circle of radius 3.5cm is removed from the centre of the square sheet. find the area of the remaining sheet​

Answer 1

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Answer 2

Answer:

Area of outer circle = πr²

$= \frac{22}{7} \times 14 \times 14$

22 × 28 = 616cm²

Area of inner circle = 2 × πr²

$= 2 \times \frac{22}{7} \times 35 \times 35$

= 22 × 3.5

= 77cm²

Area of rectangle = ( l + b)

both circles

= 616 - ( 77 + 3 )

= 616 - 80 = 536cm²