Question

Find the circumference of the circle if its radius is:
(i) 56 cm
(ii) 98cm
(iii) 3.5cm​

Answer 1

Answer:

(i) 352 cm

(ii)616 cm

(iii)22 cm

Step-by-step explanation:

Answer 2

✪ Given :

⌘ Radius of a circle is :

• 56 cm
• 98cm
• 3.5cm

✪ Exigency To Find :

• We have to find the circumference of the circle.

✪ Formulae Used :

• 2πr

✪ AnswErs :

• 352
• 616
• 22

✪ Explanation :

ㅤㅤㅤㅤㅤㅤㅤ 1.ㅤㅤㅤㅤㅤ

❍ Radius ➠ 56 cm.

❏ As we know that, to find the circumference if radius is given :

➠ 2πr

❒ Substituting the known values :

➠ 2 × ²²⁄₇ × 56

➠ 44⁄₇ × 56

➠ 44 × 8

➲ 352.

.°. The circumference is 352 cm.

ㅤㅤㅤㅤㅤㅤㅤ 2.ㅤㅤㅤㅤㅤ

❍ Radius ➠ 98 cm.

❏ As we know that, to find the circumference if radius is given :

➠ 2πr

❒ Substituting the known values :

➠ 2 × ²²⁄₇ × 98

➠ 44⁄₇ × 98

➠ 44 × 14

➲ 616.

.°. The circumference is 616 cm.

ㅤㅤㅤㅤㅤㅤㅤ 3.ㅤㅤㅤㅤㅤ

❍ Radius ➠ 3.5 cm.

❏ As we know that, to find the circumference if radius is given :

➠ 2πr

❒ Substituting the known values :

➠ 2 × ²²⁄₇ × 3.5

➠ 2 × ²²⁄₇ × ³⁵⁄₁₀

➠ 2 × 11

➲ 22.

.°. The circumference is 22 cm.