Geometry: Mensuration, Trigonometry

The base of a rectangle is three times as long as the height. If the perimeter is 64, what is the area of the rectangle?

Painting a wall costs BDT. 50 per sq. m. If the 20m long wall has a width of 10m, how much would it cost to paint 7/10th of the wall?

The length of two sides of the right angled triangle is 13cm and 5cm respectively. The length of the third side is -

What is the value of sin45° ?

What is the perimeter of the rectangle shown at the right? 

In triangle ABC, AB = AC . All of the following statements are true except

The slope of the line perpendicular to the line y = - 5x + 9 is-

Two sides of a triangle are 7 and 16. Which of the following is not the length of the third side?

How many triangle are there in the figure below.

The breadth of a rectangular field is 60% of its length. If the perimeter of the field is 800 m, what is the area of the field?

The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?

A ladder rests against a wall that is perpendicular to the ground. If the bottom of the ladder is 4m away from the bottom of the wall, while the top of the ladder is at a height of 3m. What is the length of the ladder?

A rectangular floor that measures 8 meters by 10 meters is to be covered with carpet that each measure 2 meters by 2 meters. If the carpet cost Tk. 12 a piece, what is the total cost to cover the floor?

A rhombus is a quadrilateral -

A wall 8 m long, 6 m high and 22.5 cm thick is made up of bricks, each measuring 25 cm × 11.25 cm × 6 cm. The number of bricks required is

The angles of a triangle are in the proportion of 1 : 2 : 3 and the length of the smallest side is 1 cm. what is the length of the longest side of the triangle?

Two ships are sailing in the sea on the two sides of a lighthouse. The angles of elevation of the top of the lighthouse as observed from the two ships are 30° and 45° respectively. If the lighthouse is 100m high, the distance between the two ships is :

A right triangle has sides in the ratio of 5 : 12 : 13. What is the measure of the smallest angle in the triangle, in degree?

In a triangle the lengths of two sides are 5 and 9 and the length of the third side is represented by x. Which statement is always true?

In the picture area of the square ABCD is 196 square miles, O is the center of the circle. What will be the area of the circle in square miles?