15cm2
30cm2
616cm2
1262cm2
Correct answer is B
\(V = \pi r^2 h\\
210 = \frac{22}{7} \times 14^2 \times h \\
h = \frac{210}{22 \times 28}\)
Curved surface area \(= 2r\pi h\\
= 2 \times \frac{22}{7} \times 14 \times \frac{210}{22 \times 26} = 30cm^2\)
In the diagram, line \(\overline{EC}\) is a diameter of the circle ABCDE. If angle ABC equals ...
In how many ways can five people sit round a circular table? ...
In the diagram, PQ//RS. Find x in terms of y and z ...
Find the probability that a number selected at random from 41 to 56 is a multiple of 9 ...
In how many ways can 3 seats be occupied if 5 people are willing to sit?...
If sin 30° = 0.5, what is the cosine of its complement?...