Question

A certain forest covers an area of 3500 km^2 suppose that each year this decreases by 3.25% what will the area be after 10 years

Answer 1

The area left after 10 years is 2362.5 sq km.

Explanation:

The area of the given forest = 3500 sq km

Reduction of area per year = 3.25%

So, the area reduced per year = 3.25% of 3500

=
`(3.25)/(100)  * 3500 = 113.75`

So, the forest reduces by 113. 75 sq km in 1 year

Hence, the area reduced in 10 years = 10 x (113.75 sq km)

= 1137.5 sq km

So, the forest area left = Total area - Area reduced after 10 years

= (3500 - 1137.5) sq km

= 2362.5 sq km

Hence, the area left after 10 years is 2362.5 sq km.