Question

Find the area A of a triangle with side 5cm, 15cm and 13cm?

Answer 1

Answer:

area will be 31.56 cmsquare

Answer 2

Hey mate

here is your answer

by heron's formula---

s=33/2 cm

area= √33/2(33/2-15)(33/2-5)(33/2-13)

=

$\sqrt{ \frac{33}{2} \times ( \frac{33 - 30}{2}) \times ( \frac{33 - 10}{2} ) \times (\frac{33 - 26}{2} )} \\ = \sqrt{ \frac{33}{2} \times \frac{3}{2} \times \frac{20}{2} \times \frac{7}{2} } \\ = \frac{1}{4} \sqrt{33 \times 3 \times 20 \times 7} \\ = \frac{1}{4} \times 3 \sqrt{11 \times 20 \times 7} \\ = \frac{1}{4} \times 3 \times 39.2 4\\ = 31.56$

hope it helps you