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Big Ideas Math: Modeling Real Life, Grade 6 View details

Chapter Review

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Exercise 47 Page 337

Remember the formula for the volume of a prism.

l = 7.5ft

Practice makes perfect

From the picture, we know the dimensions of the prism. The exercise is to find the length l of the base of the prism. Let's see the diagram!

Now we can see that the prism has the height h of 4 feet and the base width w of 5 feet. The volume V of the prism is 150 cubis feet. The volume of a rectangular prism with length l, width w, and height h can be calculated using the following formula. V=l wh We can substitute the known values into this formula and solve for the length l. Let's do it!

V=l wh

▼

Solve for l

SubstituteValues

Substitute values

150= l ( 5) ( 4)

Multiply

150=l (20)

DivEqn

.LHS /20.=.RHS /20.

150/20=l * 20/20

CalcQuot