Question

9. Simplify: -12÷ (20/7) *
1 point
(a) 21/5
(b) (-21)/5
(c) (-240)/7
(d) (-24)/7
10. How many times will the wheel of radius 63cm rotate in a journey to cover a distance of 19.8m? *
1 point
(a) 500
(b) 25
(c) 50
(d) 5
11. Compare (-7)/13 ------ (-7)/13 *
1 point
(a) >
(b) <
(c) =
(d) none of these
12. A wire is in the form of a semi-circle of 21cm radius. The length of the wire will be _________ *
1 point
(a) 108cm
(b) 66cm
(c) 87cm
(d) 100cm
13. PQRS is a parallelogram. QM is the height from Q to SR and QN is the height from Q to PS. Find the area of the parallelogram PQRS and QN if PS = 8cm. *
1 point
Captionless Image
(a) 91.2 cm sq , 11.4cm2
(b) 91.2cm , 11.4cm
(c) 91.2cm , 11.4cm sq
(d) 91.2 cm sq , 11.4cm
14. Find the area of the given figure: *
1 point
Captionless Image
(a) 1600 mm sq
(b) 160 mm sq
(c) 320 mm sq
(d) 160mm
15. A rational number is said to be in the standard form if the numerator and denominator have only ___________ as a common factor. *
1 point
(a) 2
(b) 1
(c) 0
(d) none of these
16. Find the perimeter of the circle whose diameter is 84m. *
1 point
(a) 264cm
(b) 264 m sq
(c) 264m
(d) 64cm
17. Simplify: 35/36 x (-48)/21 *
1 point
(a) (-21)/9
(b) (-20)/5
(c) (-20)/9
(d) (-20)/4
18. Three rational numbers after (-4)/(14 ), (-6)/21,(-8)/28……………… *
1 point
(a) (-10)/28 (-12)/35 (-40)/42
(b) (-9)/28 (-10)/42 (-11)/49
(c) (-10)/35 12/42 (-14)/49
(d) (-10)/35 (-12)/42 (-14)/49
19. The adjoining figure shows two circles with same centre. The radius of the larger circle is 5cm and of the smaller circle is 3cm. Find the area of the shaded region (π=3.14) *
1 point
Captionless Image
(a) -50.24 cm sq
(b) 50.24 cm sq
(c) 78.5 cm sq
(d) 75.26 cm sq
20. Find three rational numbers between (-2)/11 and (-1)/3. *
1 point
(a) (-7)/33 , (-8)/33 , (-10)/33
(b) (-7)/33 , 8/33 , (-10)/33
(c) (-7)/23, (-6)/23 , (-10)/23
(d) (-7)/23 , (-6)/23 , (-8)/23
21. The formula to find the perimeter of a circle is ___________________. *
1 point
(a) πr^2
(b) 2πr
(c) l x b
(d) 1/2 πr
22. Find the height of triangle whose area is 175 cm sq with the base 14cm. *
1 point
(a) 24cm
(b) 25cm
(c) 25 cm sq
(d) 350cm
23. A path 4m wide runs along inside a rectangular park with length 25m and breadth 10m. Find the cost of cementing it at the rate of ₹ 250 per m sq. *
1 point
(a) ₹5400
(b) ₹64000
(c) ₹50000
(d) ₹54000
24. The formula to find the area of a parallelogram is derived from a ________________. *
1 point
(a) Rectangle
(b) Triangle
(c) Square
(d) none of these
25. Anju wants to fence the garden in front of her house, on three sides with length 15m, 25m, 15m. Find the cost of fencing at the rate of ₹175 per meter. *
1 point
(a) ₹9652
(b) ₹9600
(c) ₹90000
(d) ₹9625

Answer 1

9number question ka answer

Answer:

-21/5 is answer

Step-by-step explanation:

-12÷20/7.

-12×7/20

-84/20

-42/10

-21/5