Question

5. A pit with dimension 5m by 2m by 1.5m is dug. Find the cost af digning at the rate of Rise
cubic meter.
6. If 15 men can paint the walls of a building in 14 days in how many days will 30 men complete
the work?
7. Find the area of a rhombus whose diagonals are 8cm and 9cm.
8. (a) Express 2.1 X 10-7 in the usual form.
(b) Express 0.00000000000036 in the standard form.
9. Find the area of a quadrilateral ABCD which has a diagonal 10m and perpendicular on it from
opposite vertices are 6m and 5m.
10. Find the cost of 8kg apples if 7kg of apples cost Rs.3152
11. Find the surface area of a cube with edge 3m
12. The capacity of a cylindrical tank is 924 m) and the radius of the base is Tim. Find its restit.
III. Solve the following (Answer any 5)
1. Simplify 16 X x-2X125
23XX-4X 50
2.Show that (3a + 2b)2-(3a - 2b)2 = 24ab
3. A camp of 200 people has sufficient food for 15 days. Due to arrival of some mer people the
food lasts for 12 days only. How many more people arrived?
4. Evaluate 202 X 198 using suitable identity
5. A and B can do a piece a work in 8 days. A alone can do the same piece of work in 40 days. Find
the number of days in which B alone can complete the work.
6. The radius of a roller is 0.7m and it is 2m long. How much area will it cover in 10 revolutions
info​

Answer 1

Answer:

6 th answer :. fifteen people will take seven days to paint the walls