Question

cm

(I) The volume of the cuboid whose dimensions are 15 x 2.5 X 3.4 in cm is
(A) 125.7 (BY 127.5 (C) 172.5
C(D) 152.7

2) If the side of the cube is 10 cm, then its volume is
(A) 10 litres (B) 100 litres (C) 1 litre (D) 0.1 litre
(3) The height of the cylinder is 5 cm and the radius of its base is 25 cm, then its curved surface area is
(A) 78.5 cm (B) 75.8 cm (C) 75.8 cm' (D) 57.8 cm?
(4) The Euler's formula is
(A) F-V=E+2 (B) F+E=V +2 (C) F+V=E-2 D F +V=E+2
(5) The cuboid has dimensions (80 x 20 x 40) in cm. If its volume is equal to the volume of the cube, then the edge of
the cube is
(A) 80 cm (B) 20 cm (C) 40 cm (D) 100 cm​

Answer 1

Answer:

(I)B)127.5

Step-by-step explanation:

Answer 2

Answer:

1. The volume of cuboid = l × b × h

= 15 × 2.5 × 3.4

= 127.5 cu. cm Ans.

2. The volume of cube = Edge × Edge × Edge

= 10 × 10 × 10

= 100 cu. cm

= 0.1 litre Ans.