Geometry: Mensuration, Trigonometry

If the radius of cylinder is halved and height is doubled, then what will be the curved surface area?

The area of a rectangular field is 52000 sq. meters. This rectangular area has been drawn on a map to the scale 1 cm to 100 m. The length is shown as 3.25 cm on the map. The breadth of the rectangular field in the map is-

A frog is sitting on vertex A of a square ABCD. It starts jumping to the immediately adjacent vertex on either side in random fashion and stops when it reaches point C, in how many ways can it reach point C if it makes exactly 7 jumps?

A triangular plot with sides of 25 feet, 40 feet and 55 feet is to be surrounded by a fence built on pillars set 5 feet apart. How many pillars will be required to surround the plot?

The radius of circle A is r, and the radius of circle B is 3r/4 . What is the ratio of the area of circle A to the area of circle B ?

The volume of a rectangle with length, breadth, and height as 5x, 3x² and 7x⁴

In the figure ABCD is a square. If the length of the square is 10ft, then what will be the area of the triangle OCD?

If a ladder touches the roof of a wall and makes an angle of 30° with the 15 metre long wall, then the length of the ladder is-

In the figure above, (a + b + c)/(s + t + u) = ?

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

Which one is the complementary angle of 90°?

In the figure, if AB = 8, BC = 6, AC = 10 and CD = 9, then AD = ?

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

A median of a triangle divides it into two ___

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

If the perimeter of a certain rectangle is 76 m and its area is 360 m², then what is the length of its shortest side?

A circle and a rectangle have the same perimeter. The sides of the rectangle are 18 cm and 26 cm. what is the area of the circle?

A ladder is placed against a wall such that its foot is at a distance of 2.5 from the wall and its top reaches a window 6m above the ground. Find the length of the ladder.

If the radius of a circle is reduced by 40%, its circumference is reduced by-