Geometry: Mensuration, Trigonometry

66 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire in meters will be :

The difference between the radii of a bigger circle and smaller circle is 14 cm and the difference between their areas is 1056 cm² . Radius of the smaller circle is -

A hall, 20m long and 15m broad, is surrounded by a verandah of uniform width of 2.5m. The cost of flooring the verandah at Tk. 3.50 per square meter is-

The perimeter of a rectangular field is 104 meters. If the length of the field is 10 meters more than twice the width, what is the area of that field in square meters?

If the height of a tringle is increased by 60% and its base is decreased by 30%, what will be the effect on its area?

The total surface area of a hemisphere of radius r is

If the ratio of the area of a sector to the area of the circle is 3:5, what is the ratio of the length of the are in the sector to the circumference of the circle?

Read the following questions carefully and choose the right answer. (33-56):
৩৩) The length of a rectangle is 20% more than its breadth. Find the ratio of the area of the rectangle to that of the square whose side is equal to the breadth of the rectangle.

A rectangular field is 3.2 yards long. A fence marking the boundary is 11.2 yards in length. What is the area of the field in square yards?

If sin x + cos x = 1, then x = ?

The area of a rectangle R with width 4 ft is equal to the area of a square S, which has a perimeter of 24 ft, the perimeter of the rectangle R, in feet, is

If sin x = 3/4, then cos x = ? 

A square is inscribed in a circle of diameter 2a and another square is circumscribing circle. The difference between the areas of outer and inner squares is-

The difference between the length and breadth of a rectangle is 23m . If its perimeter is 206m, then its area is:

The base of a triangle is twice its height, which is 5cm. What is the area, in square centimeters, of the triangle?

The ratio of the angles of a triangle is 2 : 3 :4. What is the largest angle in degrees?

The cube root of 1331 is? 

The 2^nd angle of a right triangle is 30 degrees. Then how many degrees is the 3^rd angle?

If secθ + tanθ = x, then tanθ is -

If the diameter of a circle is decreased by 100%, by what percentage is the area of the circle decreased?