9514 1404 393
Answer:
90 cm
Step-by-step explanation:
The lateral area of a cylinder is given by the formula ...
LA = πdh
Filling in the given information, we can solve for h:
11,880 cm^2 = π(42 cm)h
h = 1180 cm^2/(42π cm) ≈ 90.0 cm
The height of the cylinder is about 90 cm.
I believe the answer is A
The area is pie times radius squared this means 4 squared times pie so 16 times pie and then that’s your answer
She originally started with 23.
We can tell this by working the equation backwards. Since she has 5 left and she had just given half to her brother, we know she had 10 a moment ago.
Before that, Mary had eaten a cookie. So we add 1 to the total and now have 11.
Before eating that cookie, she has given half to her sister, which would give her 22.
And before giving half to her sister, she had eaten the first one, which would give us 23 to start with.
