The formula to find volume is volume = length x width x height
So to find the volume of a recycling bin, multiply 3/4 x 1 x 1 1/2 ft
Anything x 1 = itself, so 3/4 x 1 = 3/4
Before multiplying 3/4 and 1 1/2 to make it easier I’m going to make 1 1/2 into an improper fraction instead of a mixed number.
To do this I multiply the outside number (1) by the denominator (2), and then add that number to the numerator (1)
1x2 = 2
2+1 = 3
1 1/2 = 3/2
Now I can multiply 3/4 and 3/2
Multiply the numerators: 3 x 3 = 9
Multiply the denominators: 4 x 2 = 8
3/4 x 3/2 = 9/8
9/8 is equivalent to 1 1/8, depending on if your teacher likes your answer to be a mixed number or not.
So, the volume of the recycling bin is 9/8 ft^3.
