What is the volume of a solid cylinder of diameter 7cm and height 7cm? (Take (pi = frac{22}{7}))
-
A.
38.5cm3 -
B.
77cm3 -
C.
269.5cm3 -
D.
1078cm3
Correct Answer: Option C
Explanation
Volume of a solid cylinder = Base area x height
Base area (=pi r^2 =frac{22}{7} times frac{7}{2}times frac{7}{2} = frac{77}{2})
Volume of a solid cylinder = (frac{77}{2}times frac{7}{1} = frac{539}{2}cm^3\
=269.5cm^3)