Question

A square card board is turned about one of its edge to
form a cylinder. If one side of the square is 22 cm, then
volume of the cylinder will be:
(a) 847 cm
0 (b) 484 cm
(c) 10648 cm3
(d) None of these​

Answer 1

Answer:

answer is d since no option is matched with the right answer

Step-by-step explanation:

one side of square is 22cm

then circumference of the circular base of the cylinder is 22cm

but we know if r is the radius of circular base then its circumference is 2πr

then 2πr =22 cm

or 2×22/7 × r = 22 cm

or r = 7/2 cm

again all sides of a square are equal

then height of the cylinder is 22cm

then volume is area of base × height

= πr²h

=22/7 × (7/2)² × 22

= 22/7 × 49/4 × 22

= 847 cm³

Since none of the above option match with the answer so d is the correct option

Note:- a will be correct option if its unit is cm³ not cm

Hope it will help you