Question

f circumference of base of a cylinder is 154 sq. cm and height is 5 cm, find curved surface area
options:
1) 264 sq .cm
2) 512 sq .cm
3) 398 sq .cm
4) 770 sq .cm
please choose correct answer if you answer correctly I mark you brainleist
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Answer 1

Answer:

770 sq.cm

Step-by-step explanation:

The formula to find the curved surface us 2×pi×radius×height

they have given the circumference of the base means the base is a circle.

to find the radius 154/pi= 49 diameter

then divide 49/2 = 24.5 radius

use the formula:

2×pi×24.5×5

=769.7

=770 sq.cm(nearest whole number)

hope this helps..

Answer 2

Answer:

Correct option is 4th one

Step-by-step explanation:

And = 154 sq. cm multiple by 5 = 770 sq. cm