Use a formula to find a value
Replace each letter in the formula with its value, then calculate.
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Use the formula A = l × w to find A when l = 13 and w = 8.
Answer: 104
Use the formula A = l × w to find A when l = 4 and w = 14.
Answer: 56
Use the formula A = l × w to find A when l = 2 and w = 5.
Answer: 10
Tip: Replace each letter in the formula with its value, then calculate.
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