a cone has a circular base with a diameter of 18 inches. the height of the cone is 40 inches what is the approximate lateral are

Question

3 years ago

7

a of the cone

1 answer:

lana66690 [7] · Answer 1 · 2022-03-22T00:53:58+03:00

Lateral Area of cone=1130.4 inches^2

Step-by-step explanation:

Diameter of circular base = 18 inches

Height of cone = 40 inches

Lateral Area of cone = ?

The formula used to find Lateral Area of cone is:

$Lateral\,\,Area\,\.of\,\,cone=\pi rh$

Since we know that r= d/2,

so, r = 18/2

r= 9

Putting values, we get:

$Lateral\,\,Area\,\,of\,\,cone=\pi rh\\Lateral\,\,Area\,\,of\,\,cone=\pi *9*40\\Lateral\,\,Area\,\,of\,\,cone=1130.4 inches^2$

So, Lateral Area of cone=1130.4 inches^2

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