Welcome to your 08 math Name 1. √0.04 = ? Deselect Answer 0.002 0.2 0.02 None of these None 2. 1 hectare =________ sq m Deselect Answer 1000 10000 100 10 None 3. A perfect square number having n digits where n is even will have square root with Deselect Answer (a) (b) (c) (d) None 4. If the diagonals of a rhombus get doubled, then the area of the rhombus becomes_______its original area. Deselect Answer tripled constant four times one by four times None 5. The dimensions of a plot are 300 m x 250 m. A builder builds 3 roads which are 3 m wide along the length on either side and one in the middle. On either side of the middle road he builds houses to sell. How much area did he get for building the houses? Deselect Answer 72300 sq m 7200 sq m 72400 sq m 72800 sq m None 6. The cube of a number x is 16 times of x then find x ______________ Deselect Answer 2 8 4 None of these None 7. A retailer buys some silk scarves for Rs. 460 and sells them at 60% profit. For how much does he sell them? Deselect Answer 676 620 520 736 None 8. A room is 12m long, 8 m broad and 4m high. What will be the area of four walls? Deselect Answer 352 sq m 160 sq m 384 sq m None of these None 9. The one’s digit of the cube of 23 is Deselect Answer 6 7 3 9 None 10. Find the area of a square park whose perimeter is 440 m, Also find the cost of growing grass on it at the rate of ₹ 2.15 per sq. m? Deselect Answer 12100 sq m ,₹ 26015 12100 sq m ,₹ 26115 11100 sq m ,₹ 36115 None of these None 11. Find the greatest number of three digits that is a perfect square. Deselect Answer 969 961 916 1024 None 12. The dimensions of a godown are 40 m, 25 m and 10 m. If it is filled with cuboidal boxes each of dimensions 2 m × 1.25 m × 1 m, then the number of boxes will be Deselect Answer 1800 2000 4000 8000 None 13. The ratio of radii of two cylinders is 1: 2 and heights are in the ratio 2:3. The ratio of their volumes is Deselect Answer 1:6 1:9 1:3 2:9 None 14. Three cubes each of side 10cm are joined end to end. Find the surface area of the resultant figure Deselect Answer 1600 cm² 1300 cm² 1400 cm² 1288 cm² None 15. A carpet of size 5 m x 2 m has 25 cm wide red border. The inner part of the carpet is blue in colour (see the figure). What is the ratio of areas of red portion to blue portion? Deselect Answer 13:27 12:27 27:13 13:28 None 16. Find the shaded area Deselect Answer 600 cm² 300 cm² 400 cm² 288 cm² None 17. A student multiplied a number by 2/5 instead of 5/2. What is the percentage error in the calculation? Deselect Answer 84% 64% 42% 25% None 18. If two cubes of sides 7 cm each are joined end by end then the surface area of cuboid will Deselect Answer 430 1372 343 490 None 19. Find the value of 45% of 280 + 28% of 450 Deselect Answer 252 286 205 282 None 20. Find the value of Deselect Answer -230 -2300 230 23 None Time's upTime is Up!
