Question

Find the attachment for the question

Answer 1

Answer:

160 cm²

Step-by-step explanation:

Here, we must find the area of the shaded portion.

So, 1st lets find area of entire circle including the shaded region:

Area or Circle = πr²

r = 10cm

Area of circle in this case:

π × 10 × 10 = 3.14 × 10 × 10 = 314 cm²               - lets take pi as 3.14 here

2nd, we must find area of inner circle:

Area or Circle = πr²

r = 7cm

Area of circle in this case:

π × 7 × 7 = $\frac{22}{7}$ × 7 × 7 = 154 cm²                       - lets take pi as $\frac{22}{7}$

Now we must subtract bot the areas:

314 - 154 = 160

Therefore, the area of the shaded figure is 160 cm²

_________________________

Hope it helps

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Answer 2

Step-by-step explanation:

AREA OF SHADED REGION WILL BE = area of bigger circle( radius = 10 cm) - Area of smaller circle(radius =4cm)

formula for area of circle is

$\pi {r}^{2}$

put values of r in this formula and you will get your answer

AREA OF SHADED REGION WILL BE = area of bigger circle( radius = 10 cm) - Area of smaller circle(radius =4cm)

AREA OF SHADED REGION WILL BE =

$\pi {10}^{2} - \pi {4}^{2}$

$100\pi - 16\pi \\ = 84\pi \\ put \: the \: value \: of \: \pi \\ = (84 \times 22) \div 7 \\ = 12 \times 22 \\ =26 4$

your answer will be 264

${cm}^{2}$

HOPE IT HELPS