Question

The City School
Class: 7_Name: Maheen
MATHEMATICS WORKSHEET NO.5
Date:
Topic: Area and circumference of a circle.
1.Find the circumference of the circle whose radius is
(a) 12 cm
(b) 7.2 cm
(C) 15 mm (Take n = 22/7)​

Answer 1

Answer:

Here's your answer

Step-by-step explanation:

C≈75.4

Answer 2

Given-

(a) 12 cm

(b) 7.2 cm

(c) 15 mm

To Find-

• Circumference of cirlce

Formula to be use-

• 2πr {π = 3.14 or 22/7 ; r = radius}

Step-by-step solution-

(a.) Radius → 12 cm

Circumference of cirlce → 2πr

Circumference of cirlce →2*22/7*12= 75.4cm

(b) Radius → 7.2 cm

Circumference of cirlce→ 2πr

Circumference of cirlce→2*22/7*7.2= 45.24cm

(c) Radius → 15 mm

Circumference of cirlce → 2πr

Circumference of cirlce→2*22/7*15= 94.25mm

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