Start learning 50% faster. Sign in now
Diameter = 2r = 14 r = 14/2 = 7cm Curved surface area = 2πrh = 2 x 22/7 x 7 x 2 = 88 cm2 Curved surface area = 2πr(h + r) = 2 x 22/7 x 7x (2 + 7) = 396 cm2 Required answer = 88 + 396 = 484 cm2
A and B together can complete a piece of work in 12 days, while B and C can complete it in 15 days. A, B, and C together can complete the same work in 8...
P can do a piece of work in 15 days, Q can complete double the work in 40 days and R can do the work in 20 days. If all of them together earn Rs. 3000, ...
The efficiency of C is 20% more than the efficiency of D. D alone can complete a piece of work in (y-2) days. The time taken by C alone to complete the ...
‘X’ can complete a job in 30 days. ‘Y’ is 50% more efficient than ‘X’. How long will they take to finish 75% of the work together?
...A can do a piece of work in 28 days, while B can do the same piece of work in 42 days. They begin working together and 6 days before completion of work,...
126 unit of work can be completed by P alone in 21 days. P started working alone and joined by Q after 10 days such that they completed the remaining wo...
Aman can complete a task in 12 days, while Bhanu alone can complete the same task in 18 days. Aman starts the work alone and continues for 4 days. Then,...
A man works twice as efficiently as a woman and three times as efficiently as a child. If 3 men and 4 children can complete a task in 18 days, how long...
‘A’ and ‘B’ can complete a certain work in 13 days and 26 days, respectively. They started working together and worked till completion of the wo...
'B' is 37.5% more productive than 'A'. Together, they can finish a task in 40 days. How many days would it take for 'A' alone to complete the entire task?