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Home » What is the sum of the first 20 positive even numbers? - High Altitude Science

What is the sum of the first 20 positive even numbers? - High Altitude Science

📅 March 11, 2026 👤 scraface

Mar 11, 2026

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A_1 = \frac{3\sqrt{3}}{2} \times 10^2 = 150\sqrt{3} \text{ cm}^2
For the new hexagon with radius 11 cm:
s' = 11 \text{ cm}
The area of the new hexagon is:
A_2 = \frac{3\sqrt{3}}{2} \times 11^2 = \frac{3\sqrt{3}}{2} \times 121...
\Delta A = A_2 - A_1 = 181.5\sqrt{3} - 150\sqrt{3} = 31.5\sqrt{3} \tex...
Thus, the area of the hexagon increases by:
\boxed{31.5\sqrt{3} \text{ cm}^2}
Question:** A right circular cone has a height of 12 cm and a base rad...
The volume \( V \) of a cone is given by:

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