Say you have small lego bricks (lets say 2 inch in length) and large lego bricks (lets say 3 inches in length) so you want to find out how many little legos will it take to equal 4 large ones, because they are smaller you need more to create the same length as the larger one, hints multiplying.
easiest way i can think of to help you out :)
Answer:
Length = 21.3333333333; Width: 12.6666666667
Step-by-step explanation:
Perimeter = 68
Perimeter of a rectangle:
2 (L +W)
Length (L) = 2W - 4
Width = W
2 ( 2W -4 +W) = 68
=> 2 (3W - 4) = 68
=> 6w -8 = 68
=> 6w = 76
=> w = 12.6666666667
Length = (12.6666666667 X 2) - 4
=> 21.3333333333
I'm assuming the square root is over the entire fraction (and not just over the 1). If so, then the answer is 1/14
Apply the square root to each part:
sqrt(1) = sqrt(1^2) = 1
sqrt(196) = sqrt(14^2) = 14
The general rule is sqrt(x^2) = x where x is any positive number.
Note how
(1/14)*(1/14) = (1*1)/(14*14) = 1/196
showing that 1/14 multiplied with itself is 1/196. The square root just thinks of this process in reverse. You start with 1/196 and end up with 1/14.
