Question

1) The side length of a cube is 3√3 cm. Which answer is a rational value?

A)The total area of the front and bottom squares.

B)The diagonal of the top square.

C)The volume.

D)The perimeter of the bottom square.

2)Which equations support the fact that rational numbers are closed under addition?

Select each correct answer.

A)35√+5√=45√35+5=45

B)12+0.5=112+0.5=1

C)10−−√+(−10−−√)=010+(−10)=0

D)316−−√+316−−√=616−−√


3)Which expressions simplify to a rational answer?
Select each answer

A)52⋅−√2√52·2

B)9√⋅16−−√9·16

C)3√⋅2√3·2

D)11−−√⋅5√

Answer 1

Answer A: The total area of the front and bottom squares = 2(3√3)² = 2(27) = 54

Explanation:

Answer 2

1) The side length of a cube is 3√3 cm. Which answer is a rational value? A)The total area of the front and bottom squares = 2(3√3)² = 2(27) = 54

option A is the correct answer