Answer:
[tex]\large\boxed{4.\ h=0.25\ mi}[/tex]
[tex]\large\boxed{6.\ b=10.5\ m}[/tex]
Step-by-step explanation:
The formula of an area of a triangle:
[tex]A=\dfrac{bh}{2}[/tex]
4.
[tex]A=0.225\ mi^2,\ b=0.6\ mi[/tex]
Substitute:
[tex]0.225=\dfrac{0.6h}{2}[/tex]
[tex]0.225=0.3h[/tex] divide both sides by 0.3
[tex]\boxed{h=0.25\ mi}[/tex]
6.
[tex]A=63\ m^2,\ h=12\ m[/tex]
Substitute:
[tex]63=\dfrac{12b}{2}[/tex]
[tex]63=6b[/tex] divide both sides by 6
[tex]\boxed{b=10.5\ m}[/tex]
