Basic Computer Knowledge Test Questions and Answers

Problems on Areas : Aptitude Test

1.

The sides of a rectangle are in the ratio of 6 : 5 and its area is 1331 sq.m. Find the perimeter of rectangle.

   A.) 120 m
   B.) 121 cm
   C.) 121 m
   D.) None of these

Answer: Option 'C'

Let 6x and 5x be sides of the rectangle 
6x × 5x = 1331 
11x2 = 1331 
x2 = 1331/11 = 121 => x = 11 
Length = 6x = 6 × 11 = 66 
Breadth = 5x => 5 × 11 = 55 
Perimeter = 2 (l+b) => 2 (66+55) = 121 m

Areas in Mensuration Download Pdf