Question

give me the answer please​

Answer 1

Answer:

1) 22cm

2) 66cm

3) 176cm

HOPE IT IS HELPFUL !!!

Answer 2

$\sf \Large Solution!!$

(a)

Diameter = 7 cm

Radius = Diameter ÷ 2

Radius = 7 cm ÷ 2

Radius = 3.5 cm

Circumference = 2πr

Circumference = $\sf 2\times \dfrac{22}{7}\times 3.5\:cm$

→ Circumference = 2 cm

(b)

Diameter = 21 cm

Radius = Diameter ÷ 2

Radius = 21 cm ÷ 2

Radius = 10.5 cm

Circumference = 2πr

Circumference = $\sf 2\times \dfrac{22}{7}\times 10.5\:cm$

→ Circumference = 66 cm

(c)

Diameter = 56 cm

Radius = Diameter ÷ 2

Radius = 56 cm ÷ 2

Radius = 28 cm

Circumference = 2πr

Circumference = $\sf 2\times \dfrac{22}{7}\times 28\:cm$

→ Circumference = 176 cm