The area of a triangle is 80cm² and its base is 8cm. If its height is (6+k) cm, find the value if k. (3marks)

K=14

Step-by-step explanation:

A=1/2*b*h

80=1/2*8*(6+k)       multiply by 2 on both sides

160=8*(6+k)            distribute by 8

160=48+8k              subtract 48 from both sides

112=8k                     divide by 8

14=K