Question

please answer atleast for one sum​

Answer 1

Answer:

anser for second sum is 300

Answer 2

Area of one square of the chessboard is 6.25 cm²

Area of a square =(side)²

6.25=(side)²

side =square root(6.25)

side =square root(2.5 × 2.5 )

side=2.5 cm

One side of chess board have 8 such squares

So it's length = 2.5×8=20 cm

Noe it has a boarder of 2 cm at each side

Therefore it's length =20 + 2+ 2

It's length =24 cm

Hope it helps

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