Solveit

i found 9/35

x raised by -1 it means 1/x

x raised by -4 it means 1/x^4 

don t worry you are not alone my teacher did the same :)

https://web2.0calc.com/

https://web2.0calc.com/

thanks guest you genius ! :)

7/n=35

7=35n

n=7/35  :P

i found way esear in the internet they devided (area)triangle into three triangles and their height will be radius of circles

r*18/2+r*18/2+r*10/2=sqrt(299)*10/2

23r=sqrt(299)*10/2

r=3.7590470577805614

Thanks CPhill ! :)

i think 250/8 = 31.25  (31)