You need three pieces of information to solve this problem: The radius of a chocolate orange is 3.2 centimetres There are 20 wedges The formula for the volume of a sphere is (4/3)πr3 Can you calculate the volume of each wedge? Solution: The central angle θ of each wedge is 360°÷ 20 = 18° This makes up θ/360 or 18/360 of a full sphere The formula for the volume of one wedge will be V = (θ/360)(4/3)πr3 V = (18/360)(4/3)π(3.2)3 V = 6.9 cm3 Alternate answer: find the volume of the sphere and divide by 20 Resources Content, HTML, graphics & design by Bill Willis 2024