Ratio of the total production of table fans in the factory from Monday to Wednesday to that from Thursday to Saturday is

The average production of table fan in that week is

The bar graph shows the production of table fans in a factory during one week. Study the bar graph and answer the question.

The maximum production exceeds the minimum production by:

The volume of metallic cylindrical pipe of uniform thickness is 748 c.c. Its length is 14 cm and its external radius is 9 cm. The thickness of the pipe is

129 meter from the foot of a cliff on level of ground, the angle of elevation of the top of a cliff is 30°. The height of this cliff is