Solve for d
d=492.84
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11.1\times 2=\sqrt{d}
Multiply both sides by 2.
22.2=\sqrt{d}
Multiply 11.1 and 2 to get 22.2.
\sqrt{d}=22.2
Swap sides so that all variable terms are on the left hand side.
d=\frac{12321}{25}
Square both sides of the equation.
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