Question

Triangle abc is right angled at a. AD is perpendicular to BC. If AB is 5cm, BC is 13cm,AC is 12cm. Find the area of triangle ABC. Also find the length.

Answer 1

Area of triangle = 1/2 x bh

= 1/2 x 5 x 12

= 30 cm^2

Length = AB + BC + AC

= 5 + 13 + 12

= 30 cm

PLS MARK AS BRAINLIST ANSWER.....

Answer 2

$s = \frac{a + b + c}{2}$

$s = \frac{5 + 13 + 12}{2}$

$s = \frac{30}{2}$

$s = 15$

$area = \sqrt{s(s - a)(s - b)(s - c)}$

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

$= \sqrt{15 \times 10 \times 2 \times 3}$

$= \sqrt{3 \times 5 \times 2 \times 5 \times 2 \times 3}$

$= \sqrt{5 \times 5 \times 3 \times 3 \times 2 \times 2}$

$= 5 \times 3 \times 2$

$= 30 {cm}^{2}$

Mark it as brainliest.