Answer :
188.4 cm² is the surface area of the cone .
What is known as a cone?
- A cone is a three-dimensional geometric object with a smooth transition from a flat, usually circular base to the apex, also known as the vertex.
- In mathematics, a cone is a recognizable three-dimensional geometric shape having a smooth and curving surface pointing upward.
- The word "cone" comes from the Greek word "konos," which denotes a peak or a wedge. The base is the flat area, while the pointy end is referred to as the apex.
given r = 4 cm
l = 15 cm
the curved surface area = πrl
= 3.14 * 4 * 15
= 188.4 cm²
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