Question

23. The perimeter of an isosceles triangle is 42 cm.
The base is 1½ times the equal side. Find the length of each side.​

Answer 1

Answer:

Isosceles triangle

Solve for height

hb≈20.49cm

b Base

1

cm

P Perimeter

42

cm

Using the formulas

P=2a+b

hb=a2﹣b2

4

Solving forhb

hb=1

2P(P﹣2b)=1

2·42·(42﹣2·1)≈20.4939cm