Page 354 - Math Smart - 7

Finding the missing edge given the volume of a cuboid

The cuboid has a volume of 125 cm^.
Calculate the height of this cuboid.

6 cm
7 cm
Solution
y=l bh yyg know the volume, length and width of this cuboid.
126 = 7 X 6 X \/\/e need to calculate the height.
126 = 42 X h
h = 3 cm Check that 7 x 6 x 3 = 126.

The height of the cuboid is 3 cm.

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Understanding

O The cuboids have the same volume.
Calculate the length of the missing edge in each cuboid.
(All dimensions are in cm.)

a = cm cm cm d = cm

Measuring Time, Area, Perimeter and Volume
1