Answer: 345.4
Step-by-step explanation:
SA=2πr^2+2πrh
SA=2(3.14)(5)^2+2(3.14)(5)(6)
SA=2(3.14)(25)+2(3.14)(30)
SA=2(78.5)+2(94.2)
SA=157+188.4
SA=345.4

- 5 = -7 .
____________________________________________This would be one way to write the expresion/equation; in which "x" represents the unknown number.
Now, to solve for "x" ;
____________________________________________Given:
____________________________________________
- 5 = -7 ;
Add "5" to EACH SIDE of the equation:
_____________________________________________
- 5 + 5 = -7 + 5 ;
to get:

= -2 ;
x = (-2 * 3) ;
_________________________________x = - 6 .
_________________________________
Answer:
5,265000
Step-by-step explanation:
390,00 x9%=351000
351000 x15==5,2650000