Question

17. length of one of the equal sides of an isosceles triangle is 4 cm. If its base is 2 cm then what is its area? a. √15cm2 b. √13cm2 c. √12cm2 d. √14cm2

A

B

C

D​

Answer 1

A

Find the height of the triangle using Pythagoras theorem

height h = (4^2 - 1)^(1/2)

area = (1/2)×(base)×(height)

area = (1/2)×2×((15)^(1/2))