Question

9. A wire can be bent in the form of a circle of radius 7cm. if it bent in the form of a square, then its
area will be
(a) 351cm2 (b) 516 cm2 (c) 218 cm2 (d) 121 cm2​

Answer 1

The area of square "(d) 121 $cm^{2}$ is correct".

Step-by-step explanation:

Here, circle of radius(r) = 7cm

∴ Circumference of circle = 2πr

= 2 × $\dfrac{22}{7}$ × 7 cm

= 44 cm

∴ Circumference of circle = Perimeter of square

⇒ 4a = 44

⇒ a = $\dfrac{44}{4}$ = 11 cm

Area of a square = $11^{2}$ $cm^{2}$

= 121 $cm^{2}$

Hence, the area of square "(d) 121 $cm^{2}$ is correct".

Answer 2

Answer:

121cm^2

Step-by-step explanation:

Explanation is in the picture