From the top of a 20 m high building, the angle of elevation of the top of a tower is 60° and the angle of depression of it's foot is at 45°, then the height of the tower is 

• 45.46 m

• 45.64 m

• 54.64 m

• 54.46 m

72.

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

What is the central angle showing the cost of paper?

• 16°

• 32°

• 38.9°

• 57.6°

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

If the cost of printing is â‚¹ 16,800/-, the royalty is

• ₹ 2,400

• ₹ 3,200

• ₹ 4,800

• ₹ 8,400

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

Royalty on the book is less than canvassing expenditure by

• 25%

• 50%

• 24%

• 12%

Study the pie-chart and answer the questions. The pie-chart given below shows the expenditure incurred in bringing out a book by a publisher.

If miscellaneous expenditure amount to â‚¹ 12,000/-, the expenditure on canvassing will be

• ₹ 80,000/-

• ₹ 1,44,000/-

• ₹ 4,68,000/-

• ₹ 4,05,000/-