What is Perimeter? Perimeter is the distance around a shape or figure. peri-meter around measure
The Units Used to Measure Perimeter is a length so it is measured by the same units as length. In Lebanon the units that are used the most are km, m, cm and mm. Follow the link to learn more about perimeter.
Perimeter of a Square To find the perimeter of a square you add all its sides. You can also use the formula: P = 4 X side since the square has all its sides equal. Example: 3 cm P= 3 cm + 3 cm+ 3 cm = 12 cm or P = 4 × 3 cm = 12 cm
Perimeter of a Rectangle To find the perimeter of a rectangle you add all its sides. You can also use the formula: P = 2 X length + 2 X width since the rectangle has its opposites sides equal. Example: P= 9 m + 4 m + 9 m + 4 m = 26 m 9 m 4 m or 4 m 9 m 2 × 9 m = 18 m and 2 × 4 m = 8 m P = 18 m + 8 m = 26 m
Find the perimeter of each given figure. 5 cm 9 cm P 8 cm 7 m S 8 cm 3 m R 4 cm 8 m 6 m E 4 cm 4 m 8 m 14 cm 4 m Q 12 cm 6 cm
What is Area is the space inside a shape or a figure. Area is measured in square units. Follow the link to learn more about area.
Area of a Square To find the area of a square you count the square units needed to cover it. You can also use the formula: A = side X side Example: 3 cm 1 2 3 4 5 6 7 8 9 3 cm A= 9 square cm or A = 3 cm × 3 cm = 9 square cm
Area of a Rectangle To find the area of a rectangle you count the square units needed to cover it. You can also use the formula: A= length X width Example: A = 15 square m 5 m 3 m 1 2 3 4 5 6 7 8 9 10 3 m 11 12 13 14 15 5 m or A = 5 m × 3 m = 15 square m
Find the area of the given figures. 13 m 12 cm 13 m Square The answer should be in square cm or square m. 5 cm Rectangle