The base of a triangle exceeds the height by 7 centimeters . If the area is 114 square centimeters, find the length of the base

Question

3 years ago

11

and the hight of the triangle

1 answer:

Ganezh [65] · Answer 1 · 2021-12-22T06:50:48+03:00

Answer:

base length = 19 cm , height = 12 cm

Step-by-step explanation:

Area formula : A = (1/2)*b*h

b = h + 7 cm

A = 114 sq. cm

114 = (1/2) * (h + 7) *h

228 = hh + 7h

hh + 7h - 228 = 0

h = -7/2 + root( 49 - 4*(-228)) /2

h = -7/2 + 31/2

h = 24/2 = 12 cm

base = 12 cm + 7 cm = 19 cm