Question

FInd the area of a triangle whose sides are 12cm, 6cm and 15cm using Heron's formula.

Answer 1

Answer:

FIRST FIND SEMI -

PERIMETER

$\frac{12cm + 6cm + 15cm}{2}$

$\frac{33cm}{2}$

16.5 cm

AREA OF THE TRIANGLE

ROOT {16.5 cm×(16.5-12cm × 16.5-6cm × 16.5-15cm)}

ROOT (16.5 cm × 4.5 cm × 10.5 cm × 1.5 cm)

781.25 ^ ²

HOPE IT HELPS YOU