Question

24
8. If the perimeter of a circle is 44 cm, then its area is:
(A) 112 sq cm (B) 38.5 sq cm (C) 77 sq cm
(D) 154 sq cm
The radiofoonbore icom It is diriddin
luke The total aufnen avan​

Answer 1

ANSWER

OPTION-D

SOLUTION:-

Given

perimeter of circle=44cm

Find: Area of circle

according to the question

$↪perimeter = 2\pi \: r \\ \\ ↪2 \times \frac{22}{7} \times r = 44 \\ \\ ↪r = \frac{44 \times 7}{22 \times 2} \\ \\ ↪r = 7$

Hence

the area of circle

$↪\pi {r}^{2} \\ \\ ↪ \frac{22}{7} \times {7}^{2} \\ \\ ↪ \frac{22}{7} \times 7 \times 7 \\ \\ ↪22 \times 7 = 154 {cm}^{2}$

Answer 2

••••••SOLUTION••••••

*GIVEN*

• The perimeter of circle=44cm

FIND-The area of circle

*according to the question*

$perimeter \: of \: circle \\ \\ = 2\pi \: r = 44 \\ \\ = 2 \times \frac{22}{7} \times r = 44 \\ \\ = r = 7$

HENCE:•

• THE AREA OF CIRCLE

$\=pi {r}^{2} \\ \\ = \frac{22}{7} \times 7 \times 7 \\ \\ = 22 \times 7 \\ \\ = 154 {cm}^{2}$