Work out the circumference of a circle with radius of 7.5cm. Taki Pi to be 3.142

Question

Mathematics

Shaun Bailey

2 July, 19:32

Work out the circumference of a circle with radius of 7.5cm. Taki Pi to be 3.142

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Answers (1)

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Dillon · Answer 1

C = 47.1 cm

Step-by-step explanation:

Here C = 2*pi*r. Replacing pi with 3.142 and r with 7.2 cm, we get:

C = 2 (3.142) (7.5 cm) = 47.13. Note that because r is given to 1 decimal place, your area should be expressed to 1 decimal place also: C = 47.1 cm