Question

1. What is the area of a circle with a diameter of 3.4 cm? Round your answer to the nearest tenth. (use 3.14 for pi)

2. What is the volume of a cube that measures 4.5 m on each side?

Answer 1

1. The area of a circle is

`a = \pi {r}^(2)`

`\pi = 3.14 \\ r = (3.4)/(2) = 1.7`

`a = (3.14) {(1.7)}^(2) \\ = 9.0746`
The area is 9.07 cm^2.

2. The volume of a cube is

`v = {s}^(3)`

`s = 4.5`

`v = {(4.5)}^(3) \\ = 91.125`
The volume is 91.125 m^3