Question

please do only question number 8 onlyyyy plxxxx do it with full method by step by step explanation and plxx post the picture of questions answer plxxxxxxxxxxxxxxxxxxxx

Answer 1

area of the shaded portion =

(14*10 ) - 1/2 pi r^2

= 140 cm^2 - (1/2 * 22/7 * 7*7)

=140 - 77 cm^2

= 63 cm^2

Answer 2

For rectangle :

l = 14 cm

b = 10 cm

area of rectangle = l × b

area of rectangle = 14 × 10

area of rectangle = 140 cm^2

Now, for semicircle :

d = 14

d/2 = r

14/2 = r

r = 7cm

area of semicircle =

$\frac{\pi \: {r}^{2} }{2}$


$= \frac{22}{7} \times \frac{1}{2} \times 7 \times 7 \\ \\ = 11 \: \times 7 \\ \\ = 77 {cm}^{2}$

area of shaded region = area of rectangle - area of semicircle

$= 140 - 77 \\ \\ = 63 {cm}^{2}$
hope it helps you!
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