Question

Find the diameter (D) and the height (H) of the 3D figure obtained on rotating the given triangle along its vertical axis.

• A. D = 4 cm, H = 8 cm
• B. D = 8 cm, H = 8 cm
• C. D = 4 cm, H = 7 cm
• D. D = 8 cm, H = 7 cm

Answer 1

The correct option is D D = 8 cm, H = 7 cm

On rotating the given triangle along its vertical axis, the 3D shape obtained will be a cone having the following dimensions:



Hence,
Diameter of the cone = 8 cm
Height of the cone = 7 cm