17.3 m
21.9 m
27.3 m
30 m
The angles of depression of two ships from the top of a light house are 45° and 30° towards east. If the ships are 100 m apart, the height of the light house is
The area covered by a square is 308 square cm. The length of the diagonal of the square is.
The area of a rectangular field is 2100 sq. meters. If the field is 60 metres long, what is its perimeter ?
The area of a square is three times area of a given rectangle. The length of rectangle is 5 cm more that 5² which is thrice its width. Perimeter of the square is
The area of the iron sheet required to prepare a cone 24 cm high with base radius 7 Cm is .
The area of the largest circle that can be drawn inside a rectangle with sides 18cm by 14cm is
The area of the triangle whose vertices are given by the coordinates (1, 2), (-4, -3) and (4, 1) is
The average age of 10 children is 9 years 9 months. The average of 9 children is 8 years 11 months. What is the age of the tenth child?
The average age of 100 workers in a factory is 36.5. The average age of the men is 45 and that of the women is 28. The number of women working in the factory is
The average age of 14 girls and their teacher’s age is 15 years. If the teacher’s age is excluded, the average reduces by 1. What is the teacher’s age?
