Question

1 Calculate the circumference of each of these circles. The diameter of each circle has been given. Give your answers correct to two decimal places, a) 11.2cm
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Answer 1

Answer:

Radius(r) = 14cm

Circumference= 2\pi r=2\times\frac{22}{7}\times14

=88cm

(b) Radius(r) = 28mm

Circumference= 2\pi r=2\times\frac{22}{7}\times28

=176mm

(c) Radius(r)=21cm

Circumference= 2\pi r=2\times\frac{22}{7}\times21

=132cm

Answer 2

Answer:

132cm is correct answer