Practicing Success
If the height and slant height of a right circular cone are 8 cm and 10 cm, respectively, then the volume of the cone is (use π = $\frac{22}{7}$ ): ( correct the two decimal places) |
200 cm3 301.71 cm3 258 cm3 299.45 cm3 |
301.71 cm3 |
Given, Height = 8 cm Slant height = 10 cm We know that, l2 = r2 + h2 Where, h = height r = radius and l = slant height 102 = r2 + 82 = 100 = r2 + 64 r2= 100 - 64 = 36 r = 6 We know that the volume of the cone = \(\frac{1}{3}\)πR2H = \(\frac{1}{3}\) × \(\frac{22}{7}\) × (6)2 × 8 = 301.71 cm3 |