Annie is baking a square-shaped cake for her sister's birthday. she is expecting 18 guests. she plans to cut the cake into square-shaped pieces 2 inches long. the cake must be big enough so each guest gets 2 pieces. what must the length of the cake be for each guest to get 2 pieces each?

Givens

So, if she expects 18 guets, and she wants to give 2 pieces to each of them, that means she needs 36 cake pieces.

If each piece is 2 inches long, that means the area per piece is 4 square inches.

Therefore, she needs 144 square inches of cake to give 2 pieces to each guest and have 18 guests.

In terms of length, it would be 72 inches.

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