Here is the list of mathematics exercises on perimeter and area calculations. Each corrected exercise is accompanied by indications, reminders of the course, methodological advice which allows you to practice independently.

6 exercises
• N°1242 (perimeters and areas) : The purpose of this exercise is to calculate the perimeter of a circle knowing its radius.

Exercise example :

The perimeter of a circle is given by the formula P=2*pi*r, where r is the radius of the circle.
Give an approximate value to 2 decimal places of the perimeter of a circle of radius 7.

1242 perimeters and areas perimeter_circle
• N°1245 (perimeters and areas) : The purpose of this corrected exercise is to practice calculating the area of a disk.

Exercise example :

The area of a disk is given by the formula A=pi*r^2, where r is the radius of the circle.
Give an approximate value to 2 decimal places of the area of a disk of radius 14.

1245 perimeters and areas area_circle
• N°11201 (perimeters and areas) : The purpose of this corrected exercise is to practice calculating the area of a rectangle.

Exercise example :

The area of a rectangle is given by the formula L*l where L is the length and l is the width. Calculate the area of a rectangle where L=9 and l=6.

11201 perimeters and areas area_rectangle
• N°11202 (perimeters and areas) : The purpose of this corrected exercise is to practice calculating the area of a square.

Exercise example :

The area of a square is given by the formula l*l where l is the length of a side. Calculate the area of a square where l=9.

11202 perimeters and areas area_square
• N°11203 (perimeters and areas) : The objective of this exercise is to calculate the perimeter of a rectangle knowing its length and width.

Exercise example :

The perimeter of a rectangle is given by the formula 2*(L+l), where L is the length and l the width.
Calculate the perimeter of a rectangle of length L=20 and width l=12.

11203 perimeters and areas perimeter_rectangle
• N°11204 (perimeters and areas) : The objective of this corrected exercise is training in calculating the perimeter of a square knowing the length of a side.

Exercise example :

The perimeter of a square is given by the formula 4*l, where l is the length of a side. Calculate the perimeter of a square of length l=20.

11204 perimeters and areas perimeter_square

The perimeters and areas topic is available for : 6th Grade, 7th Grade