Scribe .

Question 15

Evaluate:
square root of
:a)49=7
b)64=8
c)652=25.2

To get all those answers, I simply used my calculator.

Question 16

Evaluate:
Square root of:
a)9=3
b)25=5
c)1600=40

Again to get those answers, I used my calculator.

Question 23 A helicopter landing pad has a square shape.
The area is 400m squared.
Use Prime factorization to fine the side length of the pad.

400
=200 x 2
=100 x 2 x 2
=50 x 2 x 2 x 2
=25 x 2 x 2 x 2 x 2
=5 x 5 x 2 x 2 x 2 x 2
400 = (5x2x2) x (5x2x2)
400 = 20 x 20
400 = 20 squared