Question
the room is rectangular and measures 9 feet on one side and 15 feet on the other. she needs 0.5 ounces of paint per spuare foot. how much paint does she need?
Answers
PsyDAG
How high is the wall?
STEVIUM
L=15,B=9(Rectangle), sqrs in rectangle=let x be number of sqrs in rectangle,and L be length of sides:15*9=x*(L*L)
STEVIUM
divide both sides by x= 15*9/x=L*L,square root both sides,then cross-multiply rootx and equate 3*root15=L*rootx
STEVIUM
x=15,L=3,in each sqrs we have 9foot sqrs,0.5 ounce per foot sqr=0.5*9=4.5,there are 15 sqrs, ounce of paint=4.5*15=67.5
Josh
67.5