Question

find the missing values base = 15cm, height = ? , area of triangle = 87cm square

Answer 1

Area of triangle=(1/2) (base) (height)
87=(1/2)(15)(height)
Height=[(87)(2)]/15
Height=11.6cm

Answer 2

Given,b=15 cm A=87 cm^2 h=?
We know that...
Area of triangle=1/2*b*h
A/q,......
87=1/2*15*h
15*h*1=87*2
15h=174
h=174/15
h=11.6 cm