Question

Find the area of a triangle whose sides are 15cm, 6cm, 10cm using heron's formula​

Answer 1

Answer:

15+10+6/2 =31/2

Step-by-step explanation:

Answer 2

Answer:

20 cm sq

Step-by-step explanation:

S=(15+6+10)/2

=31/2

=15.5cm

using herons formula

Area of triangle=

$\sqrt{s(s - 15)(s - 6)(s - 10)}$

$= \sqrt{15.5(15.5 - 15)(15.5 - 6)(15.5 - 10)}$

$=\sqrt{15.5 \times 0.5 \times 9.5 \times 5.5}$

$= \sqrt{404.9375}$

$= 20.1230589$

=20cm sq approx.