Question

Around the car park, cylindrical concrete bollards are going to go placed .

80 cm diameter with the height of 1.3m. How much concrete will each one need by working out its volume in cm3

Answer 1

0.653 m^3

Explanation:

Radius = 1/2 * 0.8 = 0.4 m

Volume = pi r^2 h

= pi * 0.4^2 * 1.3

= 0.653 m^3 to nearest thousandth

Answer 2

653.120 cm³

Explanation:

diameter/2 = 40 cm = radius

Height = 130 cm

Volume?

Volume = π r² h

= 3,14 . 1600 . 130

= 653.120 cm³

CMIIW