Question

Plz help, and explain

Answer 1

3:

You're finding the area of two shapes, a square, and a quarter of a circle.

So

A=As+Ac/4

A=Lw+πr²/4

A=(6)(6)+(3.14)(6²)/4

A=64.26 m²

4:

Line LKJ is a straight line, so <LKJ =180°

<LKJ=<JKH+<HKL

180=78+4x+2

180=80+4x

100=4x

25=x

<HKL=4x+2

<HKL=4(25)+2

<HKL=102°