If, 2 = 8; 3 = 18; 4 = 32; 5 = 50 Then, 10 = ?

Question

If
2+3=8,
3+7=27,
4+5=32,
5+8=60,
6+7=72
then
7+8=??

Answer 1

200

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n=2*n^2
10=2*10^2=200

Answer 2

Answer: 200
Explanation:
2 = 8; 2 x 4=8 or 2^2 x 2=8
3 = 18; 3 x 6=18 or 3^2 x 2=18
4 = 32; 4 x 8=32 or 4^2 x 2=32
5 = 50 5 x 10=50 or 5^2 x 2=50
:
:
Then, 10 = 10 x 20=200 or 10^2 x 2=200