*Pyramid/Cone SA Practice

Front

What is the formula for the Surface Area of a cone?

Back

SA = B + (1/2)pl, where B is the base area, p is the perimeter of the base, and l is the slant height.

Front

What does 'B' represent in the Surface Area formula?

Back

'B' represents the area of the base of the cone.

Front

How do you calculate the base area of a circle?

Back

Base area (B) = πr², where r is the radius of the circle.

Front

What is the formula for the perimeter of the base of a cone?

Back

Perimeter (p) = 2πr, where r is the radius of the base.

Front

What is the slant height of a cone?

Back

The slant height (l) is the distance from the base to the apex along the side of the cone.

Front

How do you find the total Surface Area of a cone?

Back

Total Surface Area = Base Area + Lateral Surface Area.

Front

What is the lateral surface area of a cone?

Back

Lateral Surface Area = (1/2)pl, where p is the perimeter of the base and l is the slant height.

Front

If the radius of a cone is 3 cm, what is the base area?

Back

Base Area = π(3)² = 28.26 square cm.

Front

What is the total Surface Area of a cone with a base area of 28.26 cm² and a lateral surface area of 47.1 cm²?

Back

Total Surface Area = 28.26 cm² + 47.1 cm² = 75.36 cm².

Front

How do you find the height of a cone if you know the slant height and radius?

Back

Use the Pythagorean theorem: h = √(l² - r²), where l is the slant height and r is the radius.