Answer:
#1: 11 cm
#2: 16.5 in
#3: 2.5 feet
Step-by-step explanation:
#1
Solve for width by substracting 2l on both sides to isolate 2w

or

Replace.

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#2


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#3

Solve for l

Answer:
The change division should put the unit to be dispensed with as an afterthought inverse of where it happens in the first inquiry.
540 inches * (1 yard/36 inches)
The inches best and base drop, abandoning you with the outcome in yards.
Since we know that the area is 100 and we are dealing with a square, that means that all sides are equal. We know that the sides are all 10 because 10*10= 100.
To find the perimeter, we add up all the sides: 10+10+10+10 = 40m