Answer: 810
Step-by-step explanation:
first lets take down the information we were given,
height (h) of the pyramid should be 12 - 9 = 3
base (a) = 9
So we calculate the volume of a square pyramid
V = a²h/3
V = (9² × 3) / 3
v = (81 × 3) / 3
V = 81
now we calculate the volume of the cube using the formula
V = a³
V = 9³
V = 729
NOW to get the volume of the entire figure
we say
volume of square pyramid + volume of cube
81 + 729 = 810
Answer: -X = (-) -45
Step-by-step explanation: because you can not divide a negative by a positive and get a positive you have to put a double negative on the x to make the 45 positive
Answer:
The answer is 646 cm³.
Step-by-step explanation:
Firstly you have to seperate the solid into 2 shaoes, hemi-sphere and cube. Then calculate the volumes using the formula.
Given that the diameter of cube is 8cm so the radius is 8÷2 = 4cm :
Sphere,
Let r = 4 cm,
Cube,
Let length be 8cm,
Let width be 8 cm,
Let height be 8 cm,
Lastly, you have to add up both volumes together :
