Question

find the area of shaded region​

Answer 1

Answer:

area of the bigger circle = πr²

22/7×14×14

=616 cm²

Step-by-step explanation:

area of two smaller semi-circles of equal radii=2×1/2πr²=πr²

22/7×7×7=154 cm²

area of shaded region = area of bigger circle - area of 2 smaller semi-circles

=616 cm²-154 cm²

=462 cm²               ANSWER

BY GAVYA

Answer 2

Answer:

OA = OB = OC = OD = 14CM

there are 2 semicircles and 2 quadrant

radius of quadrant = 14cm

radius of semicircle = 14÷2= 7cm

Area of quadrant AOC

= $\frac{1}{4}$ × π × r²

$\frac{1}{4}$ × $\frac{22}{7}$ × 14²

= 154 cm ²

Area of non shaded part of quadrant [ basically a semicircle ]

= $\frac{1}{2}$ × π × r²

[ given : radius = 7cm ]

$\frac{1}{2}$ × $\frac{22}{7}$ × 7²

= 77cm²

Area shaded part of AOC

= total area of AOC - un shaded part of AOC

= 154cm² - 77cm²

= 77cm²

AREA OF SEMICIRCLE AOD

=$\frac{1}{2}$ × π × r²

=$\frac{1}{2}$×$\frac{22}{7}$× 7²

= 77cm²

➥TOTAL AREA OF THE FIGURE =

= 2 [ Area of AOC + Area of AOC ]

= 2 [ 77cm² + 77cm² ]

= 2 [ 154cm² ]

= 308 cm²

∴ the total surface area is = 308cm²