Answer:
_ST = TQ-TR (23-7)
RS + ST = RT
23 - 2x + 9x - 5 = 39
18 + 7x = 39
7x = 39 - 18 = 21
x= 21/7
x = 3
RS = 23 - 2x (given)
RS = 23 - 2(3)
= 23 - 6
RS = 17
the surface area of the cylinder is 0.5mm
you hgave a 2 and you use 5 and you have to add it and it will be 12 and your answer is 15
Step-by-step explanation:
