Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest tenth.
BZZZZT! But thanks for playing.
still 91π
lateral area of cone = π r s, where r is the radius and s is the slant height.
SA = π(7)(13) = 285.885 ft^2
no idea how the bot got 441.2
Unit 2 lesson 8. 8th grade quiz
1. D
2. B
3. C
4. A
5. B
6. A
7. B
8. C
9. A
To find the lateral area of a cone, we need to know the radius and slant height. The formula to calculate the lateral area of a cone is given by:
Lateral Area = π × r × l
Where:
π = 3.14 (approximately)
r = radius of the cone
l = slant height of the cone
In this case, the radius (r) is given as 7 ft and the slant height (l) is given as 13 ft. Plugging these values into the formula, we get:
Lateral Area = 3.14 × 7 × 13
Let's calculate this:
Lateral Area = 3.14 × 7 × 13
Lateral Area = 229.22 square feet
Rounding to the nearest tenth, the lateral area of the cone is approximately 229.2 square feet.