Answer:
282.6
Step-by-step explanation:
The formula for finding the surface area of a cone is
→ ( π × r × l ) + ( π × r² )
Where "r" is the radius and "l" is the slant height
The reason this formula has 2 parts to it is because the ( π × r × l ) is to find the surface area of the curved part and not the area of the underside so that's where ( π × r² ) to find the area of the circle underneath so lets start substituting in the values,
( π × r × l ) + ( π × r² )
→ Put in the values
( π × 5 × 13 ) + ( π × 5² )
→ Simplify
65π + 25π
→ In the question it says put 3.14 for π
( 65 × 3.14 ) + ( 25 × 3.14 )
282.6
