Question

Can someone help me if is worth 20 points

Answer 1

`\large\boxed{4.\ h=0.25\ mi}`

`\large\boxed{6.\ b=10.5\ m}`

Explanation:

The formula of an area of a triangle:

`A=(bh)/(2)`

4.

`A=0.225\ mi^2,\ b=0.6\ mi`

Substitute:

`0.225=(0.6h)/(2)`

`0.225=0.3h` divide both sides by 0.3

`\boxed{h=0.25\ mi}`

6.

`A=63\ m^2,\ h=12\ m`

Substitute:

`63=(12b)/(2)`

`63=6b` divide both sides by 6

`\boxed{b=10.5\ m}`