When inflated, a beach ball has a radius of 4.5 inches. Approximately how many cubic inches of air does it hold?
A.286
B.95
C.32
D.382
can someone help I dont quite understand it I think it might be 32 am I wrong?
just took the test and got the correct answer.
D-382
Not 32!
recall that the volume of a sphere is
v = 4/3 π r^3
382 is correct
To calculate the volume of the beach ball, you can use the formula for the volume of a sphere, which is V = (4/3) * π * r^3, where V represents the volume and r represents the radius.
In this case, the radius of the beach ball is given as 4.5 inches. Plugging this value into the formula, we get:
V = (4/3) * π * (4.5)^3
V ≈ 381.703 cubic inches
Now let's look at the answer choices:
A. 286
B. 95
C. 32
D. 382
The closest match to the calculated volume of the beach ball is option D, 382 cubic inches. Therefore, your initial guess of 32 is incorrect.
The correct answer is D. 382.