ATQ, Surface area of sphere = 4 × π × radius² Height of sphere = Diameter of sphere So, radius of the given sphere = 28 ÷ 2 = 14 cm So, required area = 4 × (22/7) × 14² = 2464 cm²
‘M’ is 60% more efficient than ‘N’. ‘N’ started the work alone and worked for 20 days and after that ‘N’ is replaced by ‘M’. If the ...
A and B together can complete a piece of work in 40 days while B and C together can complete the same work in 36 days. All of three togeth...
A can complete a work in 30 days. B takes 6 days less than A to complete the same work. In how many days can both of them together complete 60% of the w...
If 3 men with 4 boys can earn Rs. 2940 in 7 days and 5 men with 9 boys earn Rs. 4620 in 6 days. In how many days will 5 men with 3 boys earn Rs. 11...
Aman manages to write 256 pages of a book over a span of 24 days, dedicating 8 hours each day to this task. Meanwhile, Pranav, who is known to be 50% mo...
Efficiency of A, and B are in the ratio of 3 : 4. If both can do a work together in 30 days. Find out how much days A will take to complete the work alone?
A and B can complete a work together in 24 days. If A alone can complete one-fourth of the work in ‘x’ days and remaining work is completed ...
The day efficiency of Rajeev is equal to the one-day efficiency of Divya and Vivek together. Divya is 25% more efficient than Vivek and starts with 20% ...
The efficiency ratio of workers A and B is 15:17. If both A and B collaboratively finish a task in 30 days, how long would it take for A to complete the...
105 people could complete a work in 36 days. But after they worked together for 7 days their employer wanted the work should be completed in a total of ...
