Geometry: Mensuration, Trigonometry

If a cube has a length of 8 cm, what is its total surface area?

The area of a circle of radius √2 is approximately-

The length of the sides of a triangle are in the ratio of 3 to 5 to 6. If the perimeter of the triangle is 70. what is the length of the longest side?

If a, b, and c are the lengths of the three sides of a triangle, then which of the following is true?

The average length of the sides of ∆ABC is 12. What is the perimeter at ∆ABC?

What would be the measure of the perimeter of a square whose area is equal to 256 square cm?

The area of a rectangle that has length = 2a²b and breadth = 3ab² is:

কোনটি ত্রিভুজের ক্ষেত্রফল?

The diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. The curved surface area is:

The complement of an angle exceeds the angle by 60°. Then the angle is equal to -

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

If a rectangle's length and width are both doubled, by what percent is the rectangle's area increased?

In a garden, there are 10 rows and 12 columns of mango trees. The distance between two trees is 2 meters and a distance of one meter is left from all sides of the boundary of the garden. What is the length of the garden?

If the radius of a circle is decreased by 20% then the area is decreased by: 

The total cost of flooring a room at Tk. 8.50 per square meter is Tk. 510. If the length of the room is 8m, what is its breadth?

The length, breadth, and height of a rectangular box are in the ratio 3 : 2 : 1. If its total surface area is 352 cm², what is its volume in cm³?

An accurate clock shows 8 o’clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 2 o’clock in the afternoon?

ABCD is a rectangle. If its length is decreased by 5 meter and the width is increased by 3 meter, the area decreases by 9 square meters. If its length is increased by 3 meter and the width is increased by 2 meter, the area increases by 67 square meters. What is the width of ABCD?

In triangle △ABC, If AB = BC and ∠B = 70°, ∠A will be:

There are two stations of length 162 meters and 120 meter respectively. A train takes 18 seconds to pass first station and 15 seconds to pass another station. Determine the length of the train.