Question

Help Me On This!!


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Answer 1

First Find the Radius of Cake by dividing 40/2

Now Find Area of the cake of Bottom

And Then Use the Formula to calculate volume of Circle

Cross Section Area=π Square

Bole of Circle 4/3π× radius cube

Answer 2

24,727.5 cm³

Explanation:

Information to keep in mind

• r₁ = 20 cm (bottom layer)
• r₂ = 20/2 = 10 cm (middle layer)
• r₃ = 10/2 = 5 cm (top layer)
• h (of each layer) = 15 cm

Formula of a cylinder

• V = πr²h

Volume (total)

• V = πr₁²h + πr₂²h + πr₃²h
• V = πh (r₁² + r₂² + r₃²)
• V = 3.14 x 15 ([20]² + [10]² + [5]²)
• V = 47.1 (400 + 100 + 25)
• V = 47.1 (525)
• V = 24,727.5 cm³