Answer:
..V = (pi*r²*h)/3
The volume of the cone is equal to: π×(10)2×10/3=1046.6666 = 1046.7cm³ (with pi =3.14)
The area of the lateral surface S of its development is equal to: S=π×R×a
, where a is the apothem of the cone.
we the height of the cone rather than its apothem, then the formula becomes: S=π×R×√(R²+h²)
The area of the side surface of the cone with radius 10 and height 10 is equal to 3.14 × 10 × √(10² + 10²) ≈ 444.06cm²...(with pi = 3.14)
Explanation: