46
Q:

# The dimensions of an open box are 50 cm, 40 cm and 23 cm. Its thickness is 2 cm. If 1 cubic cm of metal used in the box weighs 0.5 gms, find the weight of the box.

 A) 8.04kg B) 8.14kg C) 8.24kg D) 9.04kg

Explanation:

Volume of the metal used in the box = External Volume - Internal Volume

= [(50 x 40 x 23) - (44 x 34 x 20)] cu.cm

= 16080 cu.cm

Weight of the metal =[(16080 x 0.5)/1000] kg = 8.04 kg.

Q:

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

Explanation:

3 4924
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:

0 1798
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:

0 3050
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:

0 1892
Q:

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

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

Explanation:

0 2074
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:

1 206
Q:

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

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

Explanation:

2 2927
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