In ΔDEF measure of angle E is 90°. If cosD = 8/17, and DE = 16cm, then what is the length (in cm) of side DF?

ΔXYZ is right angled at Y. If m∠Z = 30°, then find the value of (sinX - 3/√2).

The curved surface area and the slant height of a right circular cone are 858 cm² and 13 cm respectively. Find its diameter (in cm).

Find the area (in cm²) of a semi-circle of radius 21 cm.

The length of one side and the diagonal of a rectangle are 7 cm and 25 cm respectively. Find its area (in cm²)

The line graph shows the number of vacancies for sales officers in a certain company. Study the diagram and answer the following questions.

The salary of a Sales officer in the company is Rs 20,000, then what was the increase in the expense (in Rs lakhs) due to salaries that had to be paid when posts were filled for the vacancies in the year 2015?

The line graph shows the number of vacancies for sales officers in a certain company. Study the diagram and answer the following questions.

The line graph shows the number of vacancies for sales officers in a certain company. Study the diagram and answer the following questions.

What was the difference in the number of vacancies between the years 2015 and 2012?