the error is that they didnt add the exponets
Answer:
D
Step-by-step explanation:
Use the formula for the SA of a hemisphere.

Now we can find the radius of the hemisphere, which is 15.
Then, we can square that and multiply it by 2 to get 450.
Now, let's use the formula for the Volume of a hemisphere.

Now we can cube 15 and multiply it by 2 to get 6750.
Then we can divide this number by 3.
2250.
So the answer is D.
Answer:
24/100
Step-by-step explanation:
Answer:
x = 34°
Step-by-step explanation:
The chord- chord angle x is half the sum of the measures of the arcs intercepted by the angle and its vertical angle.
x =
( AB + CD ) =
(45 + 23)° = 0.5 × 68° = 34°
Answer:
D - 72
Step-by-step explanation:
32 divided by 4 is 8.
So 8 times 5 is 40.
32 plus 40 equals 72.