Question
The circumference of a circle is 77 cm and the length of
the rectangle is 4 times the radius of the circle. Find the area (in cm2) of the rectangle, if the ratio of length and the breadth of the rectangle is 7:5, respectively.Solution
Let the radius of the circle = βrβ cm Circumference of the circle = 2Οr 77 = 2 Γ (22/7) Γ r r = 12.25 Radius of the circle = 12.25 cm Length of the rectangle = 12.25 Γ 4 = 49 cm Breadth of the rectangle = (49/7) Γ 5 = 35 cm Area of the rectangle = 49 Γ 35 = 1715 cm2
Ratio of the work done by P, Q and R in one day is 7:4:9 respectively. They all together can complete the work in 44 days. Q and R worked on it for 30 d...
Ten women working nine hours a day complete a particular job in 20 days. If an additional 20 women were employed and they all worked 12 hours a day, how...
X men can complete the piece of work in 50 days and (X + 51) men can complete the same work in 30 days less than that of days taken by X men. Find the v...
βAβ and βCβ together can dig a hole in 8 hours while βAβ, βBβ and βCβ together can dig the same hole in 6 hours. Find the time taken...
P can do a piece of work in 15 days, Q can complete double the work in 60 days and R can do the work in 40 days. If all of them together earn Rs. 3000, ...
Efficiency of A is 25% more than B and B takes 30 days to complete a piece of work. A started the work alone and then B joined him 4 days before actual ...
6 women and 4 children can complete a piece of work in 12 days. If 3 more women join them, they can finish 3/5 of the work in 6 days. Find the time take...
It is given that 40% of the work completed by Lokesh is equal to 30% of the work completed by Meena. If Lokesh alone can complete the entire work in 28 ...
A and B together can complete a piece of work in 10 days. A alone can complete the work in 15 days. How many days will B take to complete the work alone?
Sita is 50% more efficient than Simran. Working together, they finish the work in 24 days. How long will Sita take to complete the work alone?
Relevant for Exams:
