Question

Before it was put out, a wildfire burned 121.2 hectares (ha) ofthe countryside.Use the facts to find the area of the countryside burned by thewildfire in acres (ac).Conversion facts for area1 acre (ac) = 43,560 square feet (ft?)1 square mile (mi2) = 640 acres (ac)1 hectare (ha) - 2.5 acres (ac)|acXХ3?Note that means "is approximately equal to".For this problem, treat as if it were = .

Answer 1

To solve this problem we must apply rule of three.

The first time we have to obtain the area in acres:

1 ha --------- 2.5 ac

121.2 ha --------- y

So we have:

1 ha . y = 121.2 ha . 2.5 ac

y = 121.2 ha . 2.5 ac / 1 ha

y = 303 ac

Answer: the area of countryside burned by wildfire was 303 acres.