Answer:
441 rectangles
Step-by-step explanation:
Formula for the number of rectangles in a chessboard=
n²(n + 1)²/ 4
We are told in the question that is a 6×6 chessboard
Hence, n = 6
= 6²(6 + 1) ²/ 4
= 6²× 7²/4
= 36 × 49/4
= 1761/4
= 441 rectangles
Therefore, the number of rectangles in 6×6 chessboard is 441 rectangles.
