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<h2>
Answer:</h2>
Step 1: 17 - 9 = 8
Step 2: 8 + 4 = 12
4 more girls came to the park
Hope this helps!!
<h2>- Carmelle -</h2>
You have to know the formula for the volume of a cone.
In high school, there's no other way.
Volume of a cone = (1 / 3) π (radius)² (height)
Volume = (1 / 3) π (12 inches)² (15 inches)
Volume = 720 π = 2,261.95 cubic inches
Rounded to the nearest cubic inch, that's<u> 2,262 cubic inches</u>.
Attached the solution and work.