Question

A cube is formed by joining 27 cubes of edge 2 cm each. Find the volume of the cube so obtained. I need the answer really fast please do help...

Answer 1

Answer:

54cm^2 & 90cm^2

Step-by-step explanation:

volume of one cube= s^3

27=s^3

s=∛27

s=3 cm

now length of the resulting cuboid=3+3=6 cm

breath=3 cm

height=3 cm

now ,

lateral surface area of cuboid =2h(l+b)

2×3(6+3)

6(9)

54 cm^2

and

total surface area of cuboid = 2(lb+lh+bh)

2(18+18+9)

2(45)

90 cm^2

Answer 2

Step-by-step explanation:

side of 1 cube=2cm

volume of a cube = (side)³

therefore the volume of 1 cube = 2x2x2 = 8cm³

volume of larger cube = 27 Times of smaller cube

= 27x8cm

answer = 216 cm³or 216 cubic cm