A company makes steel rods shaped like cylinders. Each rod has a radius of 2 centimeters and a height of 90 centimeters. How much steel will the company need to make 172 rods?
Use 3.14 for pi, and do not round your answer.
Volume of one cylinder = πr^2h
Volume of one rod = (3.14) x (2)^2 x 90 = 3.14 x 4 x 90 = 1130.4 cm^3
Total volume needed for 172 rods = 1130.4 cm^3 x 172 = 194328.8 cm^3
Therefore, the company will need 194328.8 cm^3 of steel to make 172 rods.
You sure?
Apologies for the mistake in the calculation. Let's correct it.
The correct calculation should be:
Volume of one cylinder = πr^2h
Volume of one rod = (3.14) x (2)^2 x 90 = 3.14 x 4 x 90 = 1130.4 cm^3
Total volume needed for 172 rods = 1130.4 cm^3 x 172 = 194732.8 cm^3
Therefore, the company will need 194732.8 cm^3 of steel to make 172 rods. Thank you for pointing out the error.