A square patio has an area of 50 square feet.

To the nearest tenth of a foot, what is the length of the patio?

A.
7.5 ft

B.
10.0 ft

C.
12.5 ft

D.
7.1 ft

Question

A square patio has an area of 50 square feet.

 

To the nearest tenth of a foot, what is the length of the patio?
	
	
 
A.
	7.5 ft
	
 
B.
	10.0 ft
	
 
C.
	12.5 ft
	
 
D.
	7.1 ft

jim_thompson5910 · Answer

say we have a square with these 4 equal sides (all equal to some unknown number s)

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jim_thompson5910 · Answer

the area of this square is 

$$\Large A = s*s$$

$$\Large A = s^2$$

jim_thompson5910 · Answer

we are told that the area of this particular square is 50 square feet, so A = 50

$$\Large A = s^2$$

$$\Large 50 = s^2$$

how do we isolate s?