Question

1. Find the perimeter of an isosceles triangle eachn or whose sides measures 5.8 cm and the length of whose third side is 7.5 cm.​

Answer 1

Perimeter = side+side+side

= (5.8+5.8+7.5)cm

= (11.6+7.5)cm

= 19.1cm

Answer 2

Answer:

Given,

equal side (a) of an isosceles triangle = 5.8 cm

third side (b) of an isosceles triangle = 7.5 cm

By formula,

Perimeter of an isosceles triangle = 2 × a + b

= (2 × 5.8 + 7.5) cm

= (11.6 + 7.5) cm

= 19.1 cm

Answer :- Perimeter = 19.1 cm