Question

The diameter of a circle is 5 m. Find its area to the nearest tenth.

Answer 1

Answer:19.6m^2

Explanation:

π=3.14

diameter=5m

radius=5 ➗ 2

radius=2.5

Area of circle=π x radius x radius

Area of circle=3.14 x 2.5 x 2.5

Area of circle=19.625

Area of circle=19.6

Answer 2

Area =
`19.6m^(2)`

Explanation:

Area of a circle is π
`r^(2)`

The diamter is 2 times the radius.

π
`2.5^(2)` = 19.634

Rounded to the nearest tenth = 19.6

The tenth spot is 1 behind the decimal.

19.634

5 or up, round up. 4 or down, stay the same.