Question

The lengths of two sides of an isosceles triangle are 9 cm and 20 cm. Then it
perimeter is
(a) 38 cm
(b) 69 cm
(c) 49 cm
(d) 59 cm​

Answer 1

Answer:

Option A 38cm

Step-by-step explanation:

Perimeter of isosceles triangle = 2l+b

= (2.9)+20 cm

18+20=38cm

Hope it clears

Answer 2

Answer:

given it is a isosceles triangle

there fore 2 sides are equal

there fore the measure of sides are 9,9,20

there fore perimeter is 9+9+20=38