Question
A solid metallic sphere of radius 15 cm is melted and
recast into spherical balls of radius 3 cm each. What is the ratio of the surface area of the original sphere and the sum of the surface areas of all the balls?Solution
Let the number of the smaller sphere be 'x' Volume of the bigger sphere = x × (volume of the smaller sphere) (4/3)π 15^3 = x × (4/3)π 3^3 x = 125 So their are total 125 smaller spheres Now, The surface area of the larger sphere = 4π 15 ⇒ 900π Surface area of smaller sphere = 4π 3^2 ⇒ 36π Total surface area of 125 smaller spheres = 125 × 36π ⇒ 4500π Surface area of the bigger sphere : Surface area of all smaller spheres = 900π : 4500π ⇒ 1 : 5
The tendency to pay attention to messages consistent with one's attitudes and beliefs and to ignore messages that are inconsistent is called:
The iPhone, Samsung Galaxy and new Microsoft smartphone are all positioning themselves in the same target market by emphasizing their superiority in sim...
The type of need which puts a boundary to specified needs is known as ___________.
A group of products that are closely related because they satisfy a class of needs, are used together, are sold to the same customer group, are distribu...
All of the following are critical aspects that need to be included to ensure a social media strategy is successful, except:
According to marketing managers, each of the following is an example of a sales driver EXCEPT:
_____________ marketing concept is useful when demand is more than supply.
Which of the following statements about the introduction stage of the product life cycle is NOT true?Â
Each of the following is an example of how services to consumers are adding dimensions of authenticity EXCEPT:
Jamna wants to buy a cat and asks several friends, who already have cats, to list out the reasons they used when they purchased their own cats. In which...
