x= \sqrt{ ( { 81 }^{ 2 } + { 20 }^{ 2 } }
Solve for x
x=\sqrt{6961}\approx 83.432607534
Assign x
x≔\sqrt{6961}
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x=\sqrt{6561+20^{2}}
Calculate 81 to the power of 2 and get 6561.
x=\sqrt{6561+400}
Calculate 20 to the power of 2 and get 400.
x=\sqrt{6961}
Add 6561 and 400 to get 6961.
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