Answer:
6.2 meters
Step-by-step explanation:
1) area = l*w
74.4 = 12x
x=6.2
Answer:

Step-by-step explanation:
The complete question in the attached figure
we know that
The volume of a cube is equal to

where b is the length side of a cube
In this problem we have

substitute in the formula

-----> by power of a product
----> by power of a power
Simplify

Answer:
280
Step-by-step explanation:
because I just know. it is that because I know
Each child = 2 + 5
Three children = (2 + 5) x 3
Ansswe is B. 3 x (2 + 5)
Hope this helps. - M