ABC26GN4440 · Area

Subject: General Aptitude · Chapter: Area · Exam: 2006 · Marks: · Difficulty:

The cost of papering the four walls of a room is ₹ 475. Each one of the length, breadth and height of another room is double that of this room. The cost of papering the walls of this new room is

(a)₹ 712.50

(b)₹ 950

(c)₹ 1425

(d)₹ 1900

Answer

Answer (as printed): D

Explanation

$\mathrm{A}_{1}=2(l+b) \times h ; \mathrm{A}_{2}=2(2 l+2 b) \times 2 h=8(l+b) \times h=4 \mathrm{A}_{1}$. $$\therefore \quad \text { Required cost }=₹(4 \times 475)=₹ 1900 .$$

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