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 exercisesExercise example N°1242 :

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.

perimeters and areas geometry 6th Grade 7th Grade perimeter_circle

The purpose of this exercise is to calculate the perimeter of a circle knowing its radius.

Exercise example N°1245 :

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.

perimeters and areas geometry 6th Grade 7th Grade area_circle

The purpose of this corrected exercise is to practice calculating the area of a disk.

Exercise example N°11201 :

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.

perimeters and areas geometry 6th Grade 7th Grade area_rectangle

The purpose of this corrected exercise is to practice calculating the area of a rectangle.

Exercise example N°11202 :

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.

perimeters and areas geometry 6th Grade 7th Grade area_square

The purpose of this corrected exercise is to practice calculating the area of a square.

Exercise example N°11203 :

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.

perimeters and areas geometry 6th Grade 7th Grade perimeter_rectangle

The objective of this exercise is to calculate the perimeter of a rectangle knowing its length and width.

Exercise example N°11204 :

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.

perimeters and areas geometry 6th Grade 7th Grade perimeter_square

The objective of this corrected exercise is training in calculating the perimeter of a square knowing the length of a side.