Diameter of the tin on the picture = " Height of the tin on the picture = Actual weight of coffee = 750 g 1 Measure the diameter of the tin in mm and write down the real diameter in mm 2 Hence, determine the circumference of the base of the tin in mm. You may us the formula: C = 2πr π = 3,142 Hint: radius = half of diameter .3 Measure the height of the tin in mm and write down the real height in mm.