Question

area of traingle is 90² . find the lenght of base if base is 3 more than height.​

Answer 1

ყσυɾ αɳʂɯҽɾ iʂ iɳ αƚƚαƈԋɱҽɳƚ.

Answer 2

Explanation:

Given :

Area of triangle =90 sq. cm

base=3+height

Area of triangle =1/2 x base x height

90=1/2 x 3+h x h

90x2= 3h+h2

180=3h+h2

h2 +3h -180= 0

h2 +15h -12h -180 =0

h(h+15) -12(h+15)=0

(h+15)(h-12)=0

h+15=0. or h-12=0

h= -15. or h= 12

Height cannot be negative so h=12 cm

Base =h+3

=12+3

=15 cm

Hope it helps you