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# Cocubes Quants Geometry Questions And Answers

## Cocubes Quants Geometry Questions And Answers 1) An oblong piece of ground measures 19m 2.5 dm by 12m5dm.From center of each side of the ground, a path 2m wide goes across to the center of the opposite side.What is the area of the path?

A)59.5 m^2
B)54 m^2
C)78.4 m^2
D)34 m^2

Correct Answer : C

2) In triangle PQR, PQ=6 cm, PR=8 cm, and QR=12 cm. Calculate the area of the triangle PQR

A)23.33 cm^2
B)17.5 cm2
C)21.33 cm^2
D)28.67 cm^2

Correct Answer : C

3)If the perimeter and the diagonal of a rectangle is 18 cm and √41 cm respectively.Calculate the area of the rectangular field.

A)25 cm^2
B)29 cm^2
C)18 cm^2
D)20 cm^2

Correct Answer : D

Explanation:

2(a+b) = 18 (a+b)=9 √ (a2 + b2 ) = √41 (a+b)2 = a2+b2 + 2ab ab=20

4)Find the area of Rhombus one of whose diagonals measures 8 cm and the other 10 cm.

A)47 cm^2
B)34cm^2
C)40 cm^2
D)64cm^2

Correct Answer : C

5) Which of the following graph indicates the graph of {(sin t, cos t):- π/2≤t≤0} in xy-plane? A)D
B)B
C)B
D)A

Correct Answer : C

Explanation:

B When t = -90 then (sin t, cos t) = (-1,0) When t=0 then (sin t, cos t) = (0,1) Plot above two points in x-y plane.

6) A rectangular grassy plot is 112 m by 78 m. It has a gravel path 2.5 m m wide all around it on the inside. Find the area of the path?

A)952 m^2
B)925 m^2
C)912 m^2
D)950 m^2

Correct Answer : B

Explanation:

Area of the path = (112*78) – (73 * 107) = 925m^2

7) What is the radius of the circular plate of thickness 1cm made by melting a sphere of radius 3cm?

A)6 cm
B)5 cm
C)4 cm
D)7 cm

Correct Answer : A

Explanation:

Volume of a sphere = (4/3) * pi * r3 –(1) ( here r =3cm) Volume of circular plate of thickness 1 cm is = pi * r2 * h — (2) ( here h=1cm that is thickness ) Equating (1) and (2) r=6cm

8) A polygon has 77 diagonals.Determine the number of sides?

A)15
B)12
C)17
D)14

Correct Answer : D

9) A square field of area 31684 m2 is to be enclosed with the wire placed at height 1 m, 2 m, 3 m, 4 m above the ground. What length of the wire will be required if its length required for each circuit is 5% greater than the perimeter of the field?

A)6456 m
B)27666 m
C)2990.4 m
D)4666.5 m

Correct Answer : C

Explanation:

2990.4 m Solution: let a is side of square field then a2=31684 a=178 perimeter= 4 * a = 712 5% more than perimeter = 712 + 5% of 712 = 712 + 35.6 = 747.6 Because we enclose four times so 4 * 747.6 = 2990.4

10) Determine the metal required to make a 21 m long pipe if its inner and outer diameter is 12 m and 10 m respectively

A) 2904 m^3
B)2534 m^3
C)2843 m^3
D)2647 m^3

Correct Answer : A

Explanation:

volume of a hollow cylinder=pi*h*(R^2-r^2) 22/7*21m*(144-100)m^2 =66*44m3 =2904m3

## CoCubes Visual Reasoning Question and Answers

CoCubes Visual Reasoning Question and Answers 1 ) Select the alternative in which the specified …