Answer:
24
Step-by-step explanation:
Given two fractions
and 
Factor the denominators of both fractions:

You can see that two digits 2 are the same in both denominators and there are two more factors: 2 in number 8 and 3 in number 12.
Thus, the least common denominator for
and
is

Answer:
h=14
Step-by-step explanation:
So since the triangular shape is a right triangle, we can use a Pythagorean triple. For this question, lets use (5,12,13). But, if you just want to use the formula:
5^2+x^2=13^2
25=x^2=169
x^2=144
x=12
That means a part of h is 12. BUT, we also have an extra two ft on top of the triangle, so h=12+2=14.
0.7 is rounded to the tenth place