The volume of cone can be:
or
Step-by-step explanation:
-Use the formula to find the volume of a cone:
-Use both the radius and the height for the formula:
-Then, you solve:
So, the answer can be or .
36 girls
step-by-step explanation:
the 48 boys is 4 parts of the ratio
divide 48 by 4 to obtain one part of the ratio
= 12 ← 1 part of the ratio
3 parts = 3 × 12 = 36 ← number of girls
the surface area is 124cm²
length: 4cm
width: 9cm
height: 2cm