Acone has a circular base with a diameter of 18 inches. the height of the cone is 40 inches.
what is the approximate lateral area of the cone? use 3.14 for a and round to the nearest whole number.
565 square inches
580 square inches
1,131 square inches
1,159 square inches

Option D is correct.

Step-by-step explanation:

The formula used to find the lateral area of cone is:

Where r is the radius and h is the height.

We are given diameter d = 18 inches

height of cone = 40 inches

we know that d/2 = r

=> radius r = 18/2 = 9 inches.

The area is:

Option D is correct.

the answer is c. 23/3

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)