Cam is making a party hat, shown at left, in the shape of a cone for his
birthday. The circumference of the part of his head where the hat will
rest is 56 centimeters (cm). If the height of the hat is 25 cm, which of
the following is closest to the volume of Cam's hat, measured in cubic
centimeters (cm)?

Respuesta :

Answer:

V≈2,080cm^3  Hope I helped :)

Step-by-step explanation:

The volume of a cone of radius r and height h is:

V=1/3πr^2h

Since the circumference of Cam's head is 56

2πr=56

r=56/2π

r=28/π

The volume of the hat is therefore:

​V=1/3π(28/π )^2(25)

V=1/3((28)^2/π)(25)

V=1/3(19,600/π)

V≈2,080cm^3

 

The volume of the Cam's hat measured in cubic centimetres is 2081 cm³

Volume of a cone:

The volume of a cone is as follows:

  • v =  1 / 3 π r²h

where

h = height

r = radius

The circumference of the part of his head where the hat will rest is 56 cm. Let's find the radius

  • circumference = 2πr
  • 56 = 2 × π × r
  • r = 28 / π

h = 25 cm

V =  1 /  3 × π × (28 / π )² × 25

V =  1 / 3 × π × 784 / π² × 25

V = 19600 / 3π

V = 19600 / 9.42

V = 2080.67940552

V ≈ 2081 cm³

learn more on volume here : https://brainly.com/question/16048559?referrer=searchResults

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