Question

find the area and perimeter of a triangle whose sides are 12cm, 14cm, 16cm and the height is 10cm​

Answer 1

Answer:

perimeter = 12+14+16=42 cm

Step-by-step explanation:

area

use hero formula

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

s = semi perimeter = 42/2= 21

a,b,c are the sides of triangular

$\sqrt{21(21 - 12)(21 - 14)(21 - 16)} \\ = \sqrt{21 \times 9 \times 7 \times 5} \\ = 21 \sqrt{15} \: cm {}^{2}$