Question

this question i dont no how to solve

Answer 1

Answer:

It is a slide that means opposite sides are triangles.

One side is painted and it's area is that of triangle.

We don't know height so use herons formula.

Area of triangle=√S(S-A)(S-B)(S-C)

A=11

B=6

C=15

S=(A+B+C)÷2

=(11+6+15)÷2

=32/2

=16

S-A=16-11

=5

S-B=16-6

=10

S-C=16-15

=1

Now substitute all these values in the formula

Area=√16×5×10×1

=√800

=√4×2×100

=20√2cm sq

So the area is 20√2.

I hope it solves ur problem and please take it