Question

If the sides of triangle are 5m, 12m and 13m then find area of triangle.​

Answer 1

Area of a triangle = 1/2×12×5=30 m²...

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Answer 2

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If the sides of triangle are 5m, 12m and 13m then find area of triangle.

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The three sides of a triangle are:5m;12m & 13m respectively.

we solve by using heron's formula

Perimeter of a triangle=$\bold{= \frac{a + b + c}{2} }$

$= \frac{5 + 12 + 13}{2} = \frac{30}{2} = 15$

Perimeter is 15m

Now ,to find area of a triangle:

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

$= \sqrt{15(15 - 5)(15 - 12)(15 - 13)}$

$= \sqrt{15(10)(3)(2)}$

$= \sqrt{15(60)} = \sqrt{900} = 30$

Therefore,the area of triangle is $\bold{\red{{3 0m}^{2}}}$

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