Area Perimeter and Volume Created by Barbara Fugitt
Area, Perimeter, and Volume Created by Barbara Fugitt Texarkana ISD
Perimeter of a Rectangle • The perimeter is the distance around a figure. • The formulas are: P = 2 L + 2 W 15 in. P = 2 (L + W) • Measured in single 8 in. units. P = 2(8 in. ) + 2(15 in. ) P = 2 (8 in. + 15 in. ) P = 16 in. + 30 in. P = 2 (23 in. ) P = 46 in.
Perimeter of a Square • The perimeter is the distance around a figure. • The formula is: P = 4 s • Measured in single units. P = 4 s P = 4(9 in. ) or 4 x 9 in. P = 36 in. 9 in.
Perimeter of a Triangle • The perimeter is the distance around a figure. • Add up all three sides. P = A + B + C • Measured in single units. P=A+B+C 5 inches P = 5 in. + 5 in. P = 15 in. 5 inches
Area of a Rectangle • The number of square units needed to cover the surface of a figure. • The formula is: A = L x W • Area is measured in square units. 9 in. A=Lx. W A = 14 in. x 9 in. 14 in. A = 126 square in.
Area of a Square • The number of square units needed to cover the surface of a figure. • The formula is: A = s² or A = s x s • Area is measured in square units. 6 in. A = s² A=sxs A = 6 in. ² A = 6 in. x 6 in. A = 36 sq. in.
Area of a Triangle • The number of square units needed to cover the surface of a figure. • The formula is: A =½bh or A = bh 2 • Area is measured in square units. 5 in. 4 in. 5 in. A =½bh A = ½(5 in. x 4 in. ) A = ½ (20 sq. in. )
Volume • The volume is the amount of space occupied by a three-dimensional object. • The formula is V = L x W x H • Volume is measured in cubic units. 5 in. V=Lx. Wx. H V = 5 in. x 2 in. x 5 in. 2 in. 5 in. V = 10 sq. in. x 5 in. V = 50 cubic in.
You try some • What is the perimeter of the following shape? P = 20 cm. 4 cm. 6 cm.
What formula do you use to find the area of the following figure? What units do you use? Formula: A = L x W Units: square units
What formula do you use to find the perimeter of the following figure? What units do you use? Formula: P = 2(L + W) or 2 L + 2 W Units = single units
What formula do you use to find the perimeter of the following figure? What units do you use? Formula: Add up all the sides Units: single units
What formula do you use to find the area of the following figure? What units do you use? Formula: ½ bh or bh 2 Units: square units
What formula do you use to find the area of the following figure? What units do you use? Formula: A = s² Units: square units
What formula do you use to find the perimeter of the following figure? What units do you use? Formula: P = 4 s Units: single units
What formula do you use to find the volume of the following figure? What units do you use? Formula: V = L x W x H Units: cubic units
What is the area of the following shape? 8 cm 5 cm 8 cm 10 cm A = 25 sq. cm.
What is the area of the figure? 10 ft 25 ft. A = 250 sq. ft.
What is the perimeter of the following figure? 15 yards 8 yards 10 yards P = 33 yards
What is the volume of the following figure? 8 m. 3 m. 10 m. V = 240 cubic meters
What is the area of the square? 9 cm A = 81 square cm
What is the perimeter of the square? 10 cm P = 40 cm
What is the volume of the figure? 5 in. V = 125 cubic inches
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