a To calculate the volume of a cylinder, we have to multiply the area of the base with its height.
B
b Divide the weight of the cork with its volume.
A
a 62.83 cm^3
B
b 0.0398 g/cm^3
Practice makes perfect
a To calculate the volume of a cylinder, we have to multiply the area of the base with its height. Since the base of a cylinder is circular, we can find its area by multiplying the radius with π. From the exercise we know that the radius is 2 cm.
Now we can find the volume by multiplying the area of the base with the height.
Volume: 4π(5) ≈ 62.83 cm^3
b We know that the cork weighs 2.5 grams. If we divide the number of grams by the number of cubic centimeters, we can determine the cork's density.
