Question

base radius and height of a right circular cone are 8 cm and 6 CM respectively find its volume surface area and total surface area

Answer 1

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Answer 2

Answer:

Base radius of a right circular cone = 8 cm

Height of a right circular cone = 6 cm

$\text{Volume of cone = }\frac{1}{3}\pi\times radius^2\times height\\\\\implies \text{Volume of cone = }\frac{1}{3}\pi\times8^2\times 6\\\\\implies\bf\textbf{Volume of cone = }402.12\:\:cm^3$

$\text{Surface Area of cone = }\pi\times radius\times\sqrt {height^2+radius^2}\\\\ \implies\text{Surface Area of cone = }\pi\times 8\times\sqrt{6^2\times +8^2}\\\\ \implies\bf\textbf{Surface Area of cone = }251.33\:\:cm^2$

$\text{Total surface area of cone = }\pi\times radius(radius + \sqrt {radius^2+height^2})\\\\\implies\text{Total surface area of cone = }\pi\times 8(8+\sqrt{8^2+6^2})\\\\\implies\bf\textbf{Total surface area of cone = }452.39\:\:cm^2$