Answer
Where is the picture
Step-by-step explanation:
You want to be finding out what two factors (where one of them is a perfect square) has the produce of 63. It seems like 9 x 7 (9 is the perfect square) works.

The square root of 9 is 3 so we can just have

(which just means 3 times the square root of 7).
Hello There!
.84 ÷ .02 ≈ 42
WORK SHOWN IN IMAGE ATTACHED