Everything Maths Grade 10

Step 2: Calculate the volume

V=

1

3

r^2 H

=

1

3

 9  11

=103,7 cm^3

Step 3: Write the final answer

The volume of the cone is 103,7 cm^3.

Worked example 15: Finding the volume of a sphere

QUESTION

Find the volume of the following sphere (correct to 1 decimal place):

4 cm

SOLUTION

Step 1: Use the formula to find the volume

volume=

4

3

r^3

=

4

3

(4)^3

=268,1 cm^3

Step 2: Write the final answer

The volume of the sphere is 268,1 cm^3.

Chapter 13. Measurements 445