Question

Can someone please help me with #10. i need the one with solution. thanks!

Answer 1

The reason this problem is so sneaky is that it has a lot of
different units in it, and you have to keep them all straight.

Volume of concrete for the patio = (length) x (width) x (height).

You know all of these dimensions, but be careful.  Before
you multiply them, they must all be in the same units.

          Length  =  36 ft
          Width  =  24 ft
          Height  =  9 inches  =  3/4 of a ft  (0.75 ft).

NOW you can multiply to get the volume.

         Volume = (36 ft) x (24 ft) x (0.75 ft) .

                       The result is the volume in ft³  (cubic feet).

Now you need to figure out how much this will cost, but you run into
another problem . . . you know how much each yd³ costs, but you
only have the volume in ft³.  You have to change the ft³ into yd³ .

Here's the tool you need to do that:      1 yd³ = 27 ft³
 
The rest is just arithmetic.  I know you can handle it from this point.

Answer 2

Problem 10
One foot is equal to 0.333 yards, so convert the feet to yards.
One inch is equal to 0.0278 yards.
(36 feet × 0.333 = 12) 36 feet = 12 yards 
(24 feet × 0.333 = 8) 24 feet = 8 yards 
(9 inches × 0.0278 = 0.25) 9 inches = 0.25 yards 
Now, multiply it all together (L × W × H).
12 × 8 × 0.25 = 24 yards
Then multiply the number of cubic yards.
24 × 55= $1320
The answer is $1320