Math Problem Statement

The diagram shows a cone of radius 16 cm. The curved surface area of the cone is 544π cm². Find the slant height, l, of the cone.

Solution

The problem asks us to find the slant height ll of the cone, given the radius r=16cmr = 16 \, \text{cm} and the curved surface area A=544πcm2A = 544\pi \, \text{cm}^2.

The formula for the curved surface area of a cone is:

A=πrlA = \pi r l

We can substitute the values for AA and rr and solve for ll:

544π=π×16×l544\pi = \pi \times 16 \times l

Now, divide both sides by π\pi:

544=16l544 = 16l

Solve for ll:

l=54416=34cml = \frac{544}{16} = 34 \, \text{cm}

Thus, the slant height ll of the cone is 34 cm.

Would you like any more details or further explanation?

Here are five related questions:

  1. What is the formula for the total surface area of a cone?
  2. How do you calculate the volume of a cone?
  3. Can you find the height of the cone using the Pythagorean theorem, given ll and rr?
  4. How would the curved surface area change if the radius were doubled?
  5. What is the difference between slant height and perpendicular height?

Tip: Always ensure that the units are consistent when calculating areas, volumes, or other quantities.

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Math Problem Analysis

Mathematical Concepts

Geometry
Surface Area of 3D Shapes

Formulas

Curved surface area of a cone: A = πrl

Theorems

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Suitable Grade Level

Grades 9-10