First, we determine the volumes of the posts may it be cylindrical in shape or rectangular prism.
(A) cylindrical:
( π(26.7/100)² - π(24.2/100)²)*(7.5) = 0.3 m³
(B) rectangular prism:
(40/100)²(7.5) - (35/100)²(7.5) = 0.28125 m³
Then, we calculate for the amount of substance
(A) cylindrical: (0.3 m³)(2700 kg/m³) = 810 kg
(B) rectangular prism : (0.28125 m³)(2700 kg/m³) = 759.375 kg
Then, calculate for the costs
(A) (810 kg)($0.38/kg) = $307.8
(B) (759.375 kg)($0.38/kg) = $288.56
Thus, the answer for A is rectangular post
B. About $19.24 can be saved.
Answer:
D. -14
Step-by-step explanation:
Not enough info. It's unknown what the size of the beads are.
the numbers are being divided by 4 so 12/4 =3
next number is 3
A mother decided to record the height of her daughter hair she notices that her kid hair grew about 15 inches every year. however, she would cut off 3 inches because it was damaged. to figure out how much hair her daughter had over the years she used the equation y=15x-3