The numerator would be 9 because u multiply 3/4 by 3 to get the bottom number to 12 so multiplying 3x3=9
Answer:
738 square ft
Step-by-step explanation:
Area of the composite figure
= 21*(12 + 9 + 6) + 9*(9 + 6) + 6*6
= 21*27 + 9*15 + 6*6
= 567 + 135 + 36
= 738 square ft
The volume is 810 ft^3= 9*10 *x
810=90x
x=810/90
x=9 feet is the long
