Geometry: Mensuration, Trigonometry

The size of the wooden block is 5 x 10 x 20 cm. How many such blocks will be required to construct a solid wooden cube of minimum size?

The length of room is 1.5 times of its breadth. If the area of the room is 216 sq. meters , what is the perimeter of the room?

If the length of rectangle B and the width of rectangle A is one-half the width of rectangle B, what is the ratio of the area of rectangle A to the area of rectangle B?

একটি বর্গের বাহুর দৈর্ঘ্য দ্বিগুণ বৃদ্ধি হলে তার ক্ষেত্রফল কতগুণ বৃদ্ধি পাবে?

Sum one of the interior angles of parallelogram is _____  degree. 

A room 5m × 8m is to be carpeted leaving a margin of 10 cm from each wall. If the cost of the carpet is Tk. 18 per sq. meter, the cost of carpeting the room will be :

Questions (36-60) : Choose the correct answer.
৩৬) A garden of 100 m length and 60m width has a walkway of 2 m width on every side. What is the area of the garden, in square meter, excluding the walkway?

What is the height of a right cylinder with radius 5 in and volume 150Π in³ ?

The area of a rectangular classroom is x² - 25. Which of the following binomials could represent the length and the width of the room.

The length of a rectangular plot is 3 folds its width. Half the area of the plot is covered by a playground whose area is 363 square meter. What is the length of the plot?

The area of a triangle with sides 3 cm, 5 cm and 6 cm is?

The length of a rectangle is increased by 25%. By what percentage should the width be decreased so that the area of the rectangle remains unchanged?

If sin 45° = √2A, then A = ?

If in ΔABC, AB = 6cm, BC = 12cm and CA = 6√3cm, then the measure of ∠A is-

A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the larger field is greater than the area of the smaller field by what amount?

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

The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is -

A picture is copied onto a sheet of paper 8.5 inches by 10 inches. A 1.5 inch margin is left all around. What area in square inches does the picture cover?

A square carpet with an area of 169 cm² must have 2 cm cut off one of its edges in order to be a perfect fit for a rectangular room. What is the area (in cm) of this rectangular room?

If tanA = 3/4, then sec A =