Question

The perimeter of an isosceles triangle is 21m with two equal sides of 6m each. Find the length of its third side​

Answer 1

Answer:

let a,b,c are the three sides of the triangle.

a+b+c= 21m

6+6+c= 21m

c= 21-12

c = 9m

Answer 2

Answer:

P=2a+b

hb=a2﹣b2

4

Solving forhb

hb=1

2P(4a﹣P)=1

2·21·(4·6﹣21)≈3.96863m

hb≈3.97m

Step-by-step explanation:

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