how can I solve these problems?

Question

the square root of 7/8?
the cube root of 3/4?

Answer 1

With help of excell.

Excel says:
(7/8)^(1/2) = 0,935414347
(3/4)^(1/3) = 0,908560296

Answer 2

if you use excel enter this into the cell

=sqrt(7/8)

answer is 0.935414347

to figure out the cube root enter
=3/4 (or .75) in cell a1
in cell a2 enter
= a1 ^ (1/3)

this since the cube root is the same as 1/root. this will work for any root.

Answer 3

with a calculator


(may not be exact)
the first is an irrational #