Question

two columns same base diameter 60 centimetre and height 15 CM are joined together along their bases find the surface area and volume of the shapes of form​

Answer 1

Step-by-step explanation:

Given Two cones same base diameter 60 centimetre and height 15 CM are joined together along their bases find the surface area and volume of the shapes of form

• After joining the surface area will consist of lateral surface area of two cones.
• So d = 60 cm
• Or r = d/2 = 60/2 = 30 cm
• Now h = 15 cm
• We know that l = √r^2 + h^2
•                             = √30^2 + 15^2
•                              =  √900 + 225
•                               =  √1125
•                                = 33.54 cm
• Surface area = 2 π r l
•                       = 2 x 3.14 x 30 x 33.54
•                          = 6,318.936 cm^2
• Volume of a cone = 1/3 πr^2h
•                              = 1/3 x 3.14 x 30 x 30  x 15
•                                = 14,130 cm^3  

Reference link will be

https://brainly.in/question/129189