125
Q:

# A rectangular block 6 cm by 12 cm by 15 cm is cut up into an exact number of equal cubes. Find the least possible number of cubes.

 A) 30 B) 40 C) 10 D) 20

Explanation:

Volume of the block = (6 x 12 x 15) cu.cm = 1080 cu.cm

Side of the largest cube = H.C.F. of 6 cm, 12 cm, 15 cm

= 3 cm.

Volume of this cube  = (3 x 3 x 3) cu.cm = 27 cu.cm

Number of cubes =$108027$ = 40.

Q:

 A) 3422 B) 3852 C) 2464 D) 3550

Explanation:

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

3 10857
Q:

What is the measure of an interior angle of a regular polygon of 8 sides?

 A) 140 B) 144 C) 135 D) 150

Explanation:

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 4391
Q:

Find the volume (in cm3) of a right circular cone of diameter 7 cm and height 7 cm.

 A) 69.06 B) 16.43 C) 11.15 D) 89.83

Explanation:

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 6943
Q:

∆PQR is right angled at Q. If m∠P = 60 deg, then find the value of (secR + 1/2).

 A) (2√2+√3)/2 B) (√3+4)/2√3 C) √3+2 D) 5/6

Explanation:

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 3333
Q:

Find the volume (in cm3) of a hemisphere of diameter 7 cm.

 A) 77 B) 63 C) 89.83 D) 54.13

Explanation:

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 3257
Q:

In ΔPQR measure of angle Q is 90 deg. If tanP = 24/7, and PQ = 14cm, then what is the length (in cm) of side QR?

 A) 50 B) 20 C) 26 D) 48

Explanation:

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

1 307
Q:

Find the surface area (in sq.cm) of a sphere of diameter 14 cm.

 A) 616 B) 4699 C) 8628 D) 6922

Explanation:

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

3 6764
Q:

If the edge of a cube is increased by 3 cm, the volume will increase by 657 cub.cm. What then is the original length of each edge of the cube?

 A) 9 cm B) 6 cm C) 8 cm D) 7 cm