Question

20^2 + (a÷2)^2= a^2

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Answer 1

Answer:

a=11.546

Step-by-step explanation:

Given,

(20)^2 + (a/2)^2 = a^2

400 + a^2 /4 = a^2 { read as four hundred plus a square by four is equal to a square }

400 = 4a^2 - a^2

400 = 3 a^2

400/3 = a^2

133.333 = a^2

√133.333 = a

a = 11.546

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