Question

The length of one side of a square is square root 86 cm.

What is the area of the square?

A.
43 cm2

B.
7396 cm2

C.
86 cm2

D.
172 cm2

Answer 1

what do you get when you square a square root?

Answer 2

lots of numbers.

Answer 3

sqrt 2 * sqrt 2 = ?

Answer 4

?????

Answer 5

what do you get when you multiply the square root of 2 by the square root of 2?

think of the definition of a square root.

Answer 6

2?

Answer 7

right

so now apply this to square root of 86

Answer 8

So your saying to time 2 with 86?