Question
Easy
The cost of painting the surface of a solid cuboid of dimensions 40 cm ├Ч 36 cm x x cm at тВ╣ 20 per 100 cm$^2$ is тВ╣ 1,032. What is the value of x ?
1
20
2
15
3
24
4
12
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: 3D Geometry
Topic: Cube & Cuboid
Correct Answer
Option B
Explanation
To determine the value of \( x \) for the given cuboid, we need to calculate the total surface area of the cuboid and relate it to the cost of painting. ### Explanation: 1. Surface Area Calculation: The surface area \( S \) of a cuboid with dimensions \( l \), \( b \), and \( h \) is given by: \[ S = 2(lb + bh + hl) \]тАжRead More
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