Question

A triangle whose side is 7 and area is Root 108 and perimeter 18 find another side​

Answer 1

Answer:

3rd side = 11 - √108

Step-by-step explanation:

One side of ∆ = 7 cm

Another side of ∆ = √108 cm

Perimeter of ∆ = 18 cm

Third side of ∆ = ?

We know that,

Perimeter of ∆ = 1st side + 2nd side + 3rd side

=> 18 = 7 + √108 + 3rd side

=> 18 - 7 - √108 = 3rd side

=> 11 - √108 = 3rd sidee

=> 3rd side = 11 - √108 ( required answer )