h=8cmr=5cm

The surface area of a cone is equal to the area of the base plus the area of the cone.

(π⋅(radius))⋅((radius)+(radius)2+(height)2)

Substitute the values of the length r=5 and height h=8 into the formula. Pi π is approximately equal to 3.14.

(π⋅5)(5+(5)2+(8)2)

Move 5 to the left of π.

5⋅π(5+(5)2+(8)2)

Raise 5 to the power of 2.

5π(5+25+(8)2)

Raise 8 to the power of 2.

5π(5+25+64)

Add 25 and 64.

5π(5+89)

5π(5+89)

Apply the distributive property.

5π⋅5+5π89

Multiply 5 by 5.

25π+5π89

25π+5π89(cm)2

Find the Surface Area cone (8cm)(5cm)