Question

An isosceles triangle has a base 6 cm and long and one of equal side is 5 cm find the area of triangle

Answer 1

Area of tri =1/2 b×h

=1/2 ×6×5

=3×5

=15 m^2

Answer 2

Area of a triangle =

                               √s (s-a) (s-b) (s-c)

                               (Heron's Formula)

Semiperimeter = 6 + 5 + 5 / 2 = 8

Area = √8 (8-6) (8-5) (8-5)

        = √8 * 2 * 3 * 3

        = √144 = 12 cm²