The floor of a rectangular deck has an area of 600 sq. ft. The floor is 20 ft. wide. How long is the floor?

2 Answers
May 3, 2018

#30# ft

Explanation:

Area #=l*w#

#600=l*20#

#600/20=l*20/20#

#= 30# ft

May 3, 2018

The length of the rectangular deck is #30# #"ft"# long.

Explanation:

The area of a rectangle is #l * w#, where #l = "length"# and #w = "width"#.

We know that the area is #600# #"ft"^2# and the width is #20# #"ft"#.

Therefore we can plug it into the formula and find the length:
#A = lw#

#600 = l(20)#

Divide both sides by #color(blue)20#:
#600/color(blue)20 = (l(20))/color(blue)20#

#30 = l#

#l = 30#

The length of the rectangular deck is #30# #"ft"# long.

Hope this helps!