Which two square roots are used to estimate ✓47

A. ✓25 and ✓36
B.✓25 and ✓49
c. ✓36 and ✓49
d. ✓49 and ✓64

An estimate for - ✓ 72 is
A.- 8.1
b. - 8.5
c. -9.1
d. -9.5

Jeff is an archetict and is drawing the plan for a room addition for a client. If the shape of the room is a cube, what is the volume in cubic feet if the length is 23 feet?

A.539
b.1024
c.12,167
D.32,768