Solve for d
d = \frac{448}{5} = 89\frac{3}{5} = 89.6
Assign d
d≔\frac{448}{5}
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d=\frac{7}{125}\times 1600
Calculate 40 to the power of 2 and get 1600.
d=\frac{7\times 1600}{125}
Express \frac{7}{125}\times 1600 as a single fraction.
d=\frac{11200}{125}
Multiply 7 and 1600 to get 11200.
d=\frac{448}{5}
Reduce the fraction \frac{11200}{125} to lowest terms by extracting and canceling out 25.
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