Making Maple Syrup ... Part 1

Hey lovelies.  I have made a new video for you - it's a documentary of me collecting sap behind my house and starting to make syrup.  This is only part 1.

Best part: there are math questions! I have put the math questions onto Google Classroom so please go ahead and answer them there.  It may take a bit of research if you haven't covered circles yet in math.  But I know you are up to the challenge!

Ms. Reyburn

Here are the questions, to recap:

1. What is the formula for calculating diameter if you only know the circumference of a circle?

2. Knowing that the ratio of sap to syrup is 40:1, if I collect two full buckets of sap, 1 bucket that is half full, and two buckets that are 3/4 full, how much syrup will I get in the end?  Each bucket can hold 2 gallons of syrup.  You may need to convert gallons to litres.