LEXIEXO
11.03.2021 •
Mathematics
A person going to a party was asked to bring 4 different bags of chips. Going to the store, she finds 20 varieties. How many different selections can she make?
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Ответ:
9514 1404 393
picture: 324 square cmboard: 1296 square cmboard dimensions: 36 cm squareStep-by-step explanation:
a) The area of the picture is the product of its dimensions:
(18 cm)² = 324 cm²
__
b) The area of the board is 4 times that:
board area = 4×324 cm² = 1296 cm²
__
c) The dimensions of the square board are the square root of its area:
√1296 = √(4×324) = (√4)(√324) = 2×18 = 36 . . . . cm
The board is 36 cm square.