Question

find the area of an isosceles triangle with base of length 6 cm and length of each equal side 5 cm

Answer 1

Answer is 12...by herons formula....

Answer 2

Semiperimeter of triangle =6+5+5/2
=16/2=8cm
Area of triangle =
$\sqrt{8(8 - 5)(8 - 5)(8 - 6)}$
$\sqrt{8 \times 3 \times 3 \times 2}$
$\sqrt{2 \times 2 \times 2 \times 2 \times 3 \times 3}$
2×2×3=12cm
IS your ans.
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