The area of a square floor on a scale drawing is 81 square centimeters, and the scale drawing is 1 centimeter:2 ft. so the original area is A = 81 sq cm ( 2 ft / 1 cm)^2a = 324 sq ft so the ratio of the ratio the area in the drawing to the actual area is: r = 81 sq cm / 324 sq ftr = 1 sq cm / 4 sq ft1 sq cm : 4 sq ft
S A = r² π + 2 r π h 192 π = r² π + 2 r π h / : π 192 = r² + 2 r h 2 r h = 192 - r² h = (192 - r² ) / 2 r V = r² π h = r² π ( (192 - r² ) / 2 r ) = = π / 2 ( 192 r - r³ )
