Question
Easy
A solid cube of side 12 cm is cut into small solid cubes of side 4 cm each. What will be the relation between the total surface area of the original cube and the new total surface area of the small cubes so formed ?
1
New total surface area will be thrice the original total surface area.
2
New total surface area will be $\frac{1}{2}$ of the original total surface area.
3
New total surface area will be twice the original total surface area.
4
New total surface area will be $\frac{1}{3}$ of the original total surface area.
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: 3D Geometry
Topic: Cube & Cuboid
Correct Answer
Option A
Explanation
To determine the relationship between the total surface area of the original cube and the new total surface area of the smaller cubes, we need to calculate the surface areas involved. 1. Original Cube: - The original cube has a side length of 12 cm. - The surface area of a cube is given by the formula: \(6 \times \text{side}^2\). - Therefore, the surface area of the original cube isтАжRead More
Similar Questions from REET Exam - Paper 1 - Year 2018
Question 1
Easy
Source :
3D Geometry
The cost of painting the surface of a solid cuboid of dimensions 40 cm ├Ч 36 cm x x cm at тВ╣ 20 per 100тАж
Chapter :
3D Geometry
Topic :
Cube & Cuboid
Question 2
Easy
Source :
3D Geometry
How many planks of size 2 m ├Ч 35 cm ├Ч 8 cm can be made from a wooden block 8 m long, 70 cmтАж
Chapter :
3D Geometry
Topic :
Cube & Cuboid
Question 3
Easy
Source :
3D Geometry
The circumference of the base of a right circular cylinder is 528 cm and its height is 2 m. What is the volume of theтАж
Chapter :
3D Geometry
Topic :
Cylinder
Question 4
Easy
Source :
3D Geometry
The curved surface area of a right circular cylinder of base radius 3 cm is 94.2 cm2. The volume (in cm3) of the cylinder isтАж
Chapter :
3D Geometry
Topic :
Cylinder