Question

28. The area of an isosceles triangle is 12 sq. units,if the length of the third side is 4 units; the length of each equal side is (in units)​

Answer 1

Step-by-step explanation:

first draw a altitude on third side

area is equal to 12sq.units

third side =4 units

therefore,

area=1/2xbxh

12=1/2x4xh

12=2xh

h=6unit

altitude bisects the line

therefore distance b/w altitude and base 2

by Pythagoras theorem,we get

H²=P²+B²

H²=6²+2²

H²=36+4

H²=40

H=√40units

answer:

2√10units