Area formula of a triangle is: A = [tex] \frac{1}{2} bh[/tex] We know the area and the height, so substitute to find the base
A = 70 m² h = 8.75 m or [tex]8 \frac{3}{4} [/tex] m (its the same thing)
70 = [tex] \frac{1}{2} [/tex] × b × 8.75 70 = 4.375b Divide by 4.375 on either sides to isolate b [tex] \frac{70}{4.375} = \frac{4.375b}{4.375} [/tex] 4.375 and 4.375 cancels out
