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A chess board contains 64 equal square and the area of each square is 6.25 cm2. A border round the board is 2cm wide. Find the side of chess board.

Class: 9

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20 cm2

24 cm2

22 cm2

26 cm2

answer is B.

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Detailed Solution

Area of each square = 6.25 cm2
Side of each square = a2
a2 = 6.25 cm2
a = 2.5 cm
Chess board contains 64 equal
square = 8 × 8
The length of chess board = 2.5 cm × 8 = 20 cm
Now, the length of chess board with the border = 20 + 2 + 2
= 24 cm

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