Question

I can't understand this question

Answer 1

126 cm^3

Explanation:

In order to find the volume of a cuboid the formula is:

l × w × h

In this case, we actually have two cuboids making up this one figure. Thus you can them apart into two cuboids.

I take one cuboid with the measurements of 9 by 7 by 3 and calculate the volume below:

`9*7*3=63`

Similarly, the other cuboid will have measurements of 3 by 3 by 7(the reason why h is 3 is that I chose to include the bottom half of the width of the cuboid). Now calculate your volume for the second cuboid:

`3*3*7=63`

Now add both volumes together and you get 126 cm^3

Answer 2

V = 126 cm³

Explanation:

the figure is made up of 2 cuboids ( flat one on the left and upright one on the right )

the volume (V) of a cuboid is calculated as

V = lbh ( l is length, b is breadth, h is height )

cuboid on left has l = 7 , b = 6 and h = 1 , then

V = 7 × 6 × 1 = 42 cm³

upright cuboid has l = 7 , b = 3 and h = 4 , then

volume = 7 × 3 × 4 = 84 cm³

Then volume of figure is the sum of the 2 volumes calculated

V = 42 + 84 = 126 cm³