Question

There is a slide in a park. One of its side walls has been painted in some colour with a
message "KEEP THE PARK GREEN AND CLEAN" If the sides of the
wall are 15 m, 11 m and 6 m, find the area painted in colour. (use heron's formula)​

Answer 1

Answer:

Answer is 20√2 m square.

Step-by-step explanation:

Clearly,the side wall is in the triangular form with sides a=15 m,b=6m,c=11m .

Let 2s be the perimeter of the side wall.Then,

2s=a+b+c

2s=15+6+11

s=16

Therefore, s-a =16-15=1, s-b=16-6=10

and s-c=16-11=5

Hence, Area to be painted in colour=Area of side wall

=√s(s-a)(s-b)(s-c)

=√16×1×10×5

=20√2m square

Hope you like it.

Answer 2

Answer:

I dont understand the meaning