Question

Please give me the correct answer
find the area of triangle whose sides are 15 CM 17 meter and 18 cm

Answer 1

Here is your answer user.

Answer 2

Use Heron's formula:

Semiperimeter, s = $\frac{15+17+18}{2}$

= $\frac{50}{2}$

= 25

let, a = 15cm, b = 17cm, c = 18cm

Area = $\sqrt{s(s-a)(s-b)(s-c)}$

=> $\sqrt{25(25-15)(25-17)(25-18)}$

=> $\sqrt{25(10) (8) (7)}$

=> $\sqrt{250 × 56}$

=> $\sqrt{14000}$

=> $\fbox{ 20\sqrt{35}\:cm^2 }$