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Elina [12.6K]
3 years ago
11

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

and the hight of the triangle
Mathematics
1 answer:
Ganezh [65]3 years ago
5 0

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

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