Question

Please explain me both the questions given in the attachement above​

Answer 1

Answer:I think in first question there's a mistake.

2nd one will be

4x+3x+2x+x=180

10x=180

X=180/10

X=18

X degree=18°

2 x=2*18=36°

3x=3*18=54°

4x=4*18=72°

So. 18+36+54+72=180.

Hope it's helpful.....