Mensuration Flashcards
What is the formula for the area of a rectangle?
Area = length × width
A rectangle has a length of 10 cm and a width of 5 cm. What is its area?
50 cm²
True or False: The perimeter of a square is four times the length of one side.
True
What is the formula for the perimeter of a square?
Perimeter = 4 × side length
If the side of a square is 6 cm, what is its perimeter?
24 cm
What is the formula for the area of a triangle?
Area = 1/2 × base × height
A triangle has a base of 8 cm and a height of 5 cm. What is its area?
20 cm²
Fill in the blank: The perimeter of a rectangle is _____ the sum of its length and width.
twice
True or False: The area of a circle can be calculated using the formula πr².
True
What is the circumference of a circle with a radius of 7 cm?
44 cm (using C = 2πr)
A rectangular garden is 12 m long and 9 m wide. What is the perimeter?
42 m
What is the area of a rectangle with a length of 15 m and a width of 10 m?
150 m²
If a triangle has a base of 10 cm and an area of 50 cm², what is its height?
10 cm
True or False: The area of a parallelogram is calculated using the formula base × height.
True
What is the area of a parallelogram with a base of 10 cm and a height of 4 cm?
40 cm²
If the perimeter of a square is 32 cm, what is the length of one side?
8 cm
A rectangle has an area of 36 cm² and a width of 4 cm. What is its length?
9 cm
Fill in the blank: The area of a trapezium can be calculated using the formula _____ (base1 + base2) × height / 2.
1/2
What is the area of a trapezium with bases of 6 cm and 10 cm, and a height of 5 cm?
40 cm²
If a rectangle’s length is tripled and the width remains the same, how does its area change?
The area is also tripled.
What is the formula for the area of a rhombus?
Area = (diagonal1 × diagonal2) / 2
A rhombus has diagonals of 8 cm and 6 cm. What is its area?
24 cm²
True or False: The area of a circle is greater than its circumference.
True
If the radius of a circle is doubled, how does its area change?
The area becomes four times larger.
What is the length of the diagonal of a rectangle with length 5 cm and width 12 cm?
13 cm (using Pythagorean theorem)
A square has an area of 64 cm². What is the length of one side?
8 cm
Fill in the blank: The perimeter of a rectangle is equal to _____ the sum of the lengths of its sides.
twice
What is the area of a square with a side length of 4 m?
16 m²
A rectangle has a length of 14 m and a width of 3 m. What is its area?
42 m²
If the height of a triangle is doubled, what happens to its area?
The area also doubles.
True or False: The sum of the angles in a triangle is always 180 degrees.
True
What is the area of a triangle with a base of 12 cm and a height of 3 cm?
18 cm²
What is the formula for the volume of a rectangular prism?
Volume = length × width × height
A rectangular prism has dimensions of 4 cm, 5 cm, and 6 cm. What is its volume?
120 cm³
Fill in the blank: The area of a trapezium is calculated as _____ the sum of the lengths of the bases times the height.
half
If a rectangle’s width is halved, how does its area change?
The area is also halved.
What is the area of a triangle with a base of 15 cm and a height of 8 cm?
60 cm²
True or False: A square is a special type of rectangle.
True
