To find the surface area of the cone-shaped spyglass, we need to find the lateral surface area.
The lateral surface area of a cone can be found using the formula: L = πr × l, where r is the radius and l is the slant height.
Plugging in the given values, we have: L = 3.14 × 6 × 18 = 339.12 cm² (rounded to two decimal places).
So, the surface area of the spyglass is approximately 339.12 square centimeters.
A spyglass in the shape of a cone has a slant height of 18 centimeters and a radius of 6 centimeters. What is the surface area of the spyglass? Use 3.14 for pi.
1 answer