Cross-section of a cone
MCQA cone 15 cm high is cut by a plane parallel to its base, 5 cm from the apex. The base of the cone has an area of 45 cm². What is the area of the resulting cross-section?
A cone 15 cm high is cut by a plane parallel to its base, 5 cm from the apex. The base of the cone has an area of 45 cm². What is the area of the resulting cross-section?