Here is a list of ages (years) of children in a room:
7, 5, 9, 8, 5, 5, 9

∠cbe and ∠deb are same-side interior angles.

i took the test

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d