Total area of 64 small squares of a chessboard is 400 sq. cm. There is 3 cm wide border around the chess board. What is the length of the side of the chess board ?
A. 17 cm
B. 20 cm
C. 23 cm
D. 26 cm
Answer: Option D
Solution(By Examveda Team)
Area of each square :$$\eqalign{ & = \left( {\frac{{400}}{{64}}} \right)c{m^2} \cr & = 6.25\,c{m^2} \cr} $$
Side of each small square :
$$\eqalign{ & = \sqrt {6.25} \,cm \cr & = 2.5\,cm \cr} $$
Since there are 8 squares along each side of the chess board, we have :
Side = [(8 × 2.5) + 6] cm
= 26 cm
Related Questions on Area
A. 15360 m2
B. 153600 m2
C. 30720 m2
D. 307200 m2
E. None of these
A. 2%
B. 2.02%
C. 4%
D. 4.04%
E. None of these
A. 16 cm
B. 18 cm
C. 24 cm
D. Data inadequate
E. None of these
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
A. 40%
B. 42%
C. 44%
D. 46%
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