Question

Work out the area the circumference of each circle. Give your answers correct to one decimal place (1 d.p)
Radius = 3.5 cm

Answer 1

$C=2\pi r=2\times 3.14\times 3.5$

$=21.98$cm

$A=\pi r^2=\pi (3.5{)}^2$

$=38.46c{m}^2$.