Mathematics
Chownie12
9

Find the missing dimension of each figure Parallelogram: h= 5 1/4 ft; a= 12 ft 2

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(1) Answers
ingridy

The area of a parallelogram can be found using the formula [latex]A=bh[/latex]. We know that [latex]A=12[/latex] and [latex]h=5\frac{1}4[/latex], so we can divide 12 by 5¼ to get b. Let's put 5¼ as an improper fraction to make dividing easier. 5 wholes = 20 fourths. 20 + 1 = 21 fourths. Dividing by a fraction is the same thing as multiplying by its reciprocal. To find the reciprocal we flip the numerator and the denominator and get 4/21. 4/21 × 12 = 48/21 which as a simplified mixed number is [latex]\boxed{2\frac{2}7\ ft}[/latex]

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