Question

From a circular sheet of radius 4 cm, a circle of radius 3 cm is removed. Find

the area of the remaining sheet.

[=
22
/7]
​

Answer 1

Answer:

22 cm2

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Step-by-step explanation:

$\pi \: {r1}^{2} - \pi \: {r2}^{2}$

$\frac{22}{7} \times {4}^{2} - \frac{22}{7} \times {3}^{2}$

$\frac{22}{7} (16 - 9)$

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

$22 {cm}^{2}$

Answer 2

πr1²−πr2²

22/7×4²-22/7×3²

22/7× (16 - 9)

22/7× 7

22cm2