Question

Can you help me please

Answer 1

6

Explanation:

Area of a triangle =1/2*base * height

21=1/2*7*h

21=7/2 h

cross multiply

7h=21*2

7h=42

h=42/7

h=6

Answer 2

h=6

Explanation:

A=(1/2)bh

b= base

h= height

A= area

21=(1/2)7h

h=21/3.5

h=6