Question

In triangle pqr, pq=6 cm,pr=8 cm and qr=12 cm. calculate the area of the triangle pqr

Answer 1

by using formula
1/2*b*h
1/2*12*6
1/2*72
=36
so area of triangle is 36
hope it is useful for you

Answer 2

Answer:

21.33

Step-by-step explanation:

We know, s = (a + b + c)/2

Here a=6cm, b=8cm, c=12cm

So, s = (6+8+12)/2 = 13cm

Are of triangle = Sqrt [s(s-a)(s-b)(s-c)]

= Sqrt [13(13-6)(13-8)(13-12)]

= Sqrt[13*7*5*1]

=21.33cm^2(Answer)

Note: Here s stands for semi perimeter & Sqrt stands for Square Root.