Step-by-step explanation:
Take John's sister's age as "x"
So, so twice his sister's age means = 2x
And 5 years more, means = 2x + 5
So finally John's age = 2x + 5
Your answer is the 3rd option.

You must divide by π on both sides, therefore d=c/π
19............(i think).............
Answer:
yes you just have to insert it. pls mark as brainliest its the crown
Step-by-step explanation: