Question

The area of a triangle whose sides are 8,11,13cm is



√30

2√30

8√30

16√30

​

Answer 1

Answer:

Sides of triangle = 8cm, 11cm, 13cm

Semi-perimeter = 8 + 11 + 13 = 32 = 16

________ ___

2 2

Area =

$\sqrt{16(16 - 8)(16 - 11)(16 - 13)}$

$\sqrt{16 \times 8 \times 5 \times 3}$

$\sqrt{2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 5 \times 3}$

= 2 × 2 × 2 × root 2 × 5 × 3

= 8 root 30

Ans. c) 8 root 30

Note: Here I have used Heron's formula.

Hope it helps.

Answer 2

Answer:

8 root(30)

Step-by-step explanation:

Don't copy!!!