Answer:
3.5 square cm
Step-by-step explanation:

<span>Cone Lateral Area = (<span>π<span> • r •<span> slant height)
</span></span></span></span><span>Cone Lateral Area = (PI * 3 * 5)
</span>Cone Lateral Area =
<span>
<span>
<span>
47.1
</span>
</span>
</span>
square inches
Cone Lateral Area =
<span>
<span>
47</span></span> square inches (rounded to nearest whole number).
Line CA is a straight line, meaning it adds up to 180°
Line BE splits the line into two supplementary angles, because when the two angles are added together they will equal 180°
Using the rule of supplementary angles, we can then make the equation 3x + 8x + 15 = 180
Now, simplify the equation by combining like terms
11x + 15 = 180
To solve, isolate x
11x + 15 = 180
11x = 165
x = 15