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3 years ago

12

The size of a television is usually indicated by the length of the screens diagonal if a person buys a 20 inch television set th

at is 12 inches tall how wide is the television

1 answer:

ipn [44]3 years ago

8 0

diagonal = sqrt(a^2 +b^2)

20 = sqrt(12^2 +b^2)

20= sqrt(144+b^2)

20^2 = 144 + b^2

400 = 144 + b^2

256 = b^2

b = sqrt(256) = 16

it is 16 inches wide

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