Question

here we calculate x​

Answer 1

Hello Friend,

We can calculate it by Pythagoras theorem,

Let the half side be 'y'

${15}^{2} = {12}^{2} + {y}^{2} \\ {y}^{2} = {15}^{2} - {12}^{2} \\ {y}^{2} = 225 - 144 \\ {y}^{2} = 81 \\ y = 9$

Therefore, the whole side =

$x = 2 \times y \\ x = 2 \times 9 \\ x = 18$

x= 18

Hope it helps

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