Unit 13 Areas Presentation 1 Formula for Area
- Slides: 23
Unit 13 Areas Presentation 1 Formula for Area Presentation 2 Areas and Circumferences of Circles Presentation 3 Formula for Areas of Trapeziums, Parallelograms and Kites Presentation 4 Surface Area
Unit 13 Areas Formula for Area
Square Side: a Area = a x a = a 2
Rectangle Sides: a, b Area = a x b = ab
Triangle Base: b Perpendicular height: h Area =
Complete the table Rectangle Length 3 cm 5 cm 12 cm 6 cm Width Area 6 cm ? 3 cm 18 ? cm 2 ? 3 cm ? 5 cm 15 cm 2 1 cm 12 ? cm 2 12 ? cm ? 6 cm 36 cm 2
Complete the table Triangle Base Height Area 15 mm 12 ? mm 90 ? mm 2 6 cm ? ? 4 cm 12 ? cm 2 ? 11 cm ? 4 cm 22 cm 2 6 m ? 7 m 21 ? m 2
Unit 13 Areas You have finished viewing: Formula for Area Return to front slide Presentation 1 Formula for Area Presentation 2 Areas and Circumferences of Circles Presentation 3 Formula for Areas of Trapeziums, Parallelograms and Kites Presentation 4 Surface Area
Unit 13 Areas and Circumferences of Circles
Circle Radius: r Diameter: d Circumference: or Area: or
Example Find the circumference and the area of the circle with radius 4 cm Circumference ? ? Area ? ? ?
Unit 13 Areas You have finished viewing: Areas and Circumferences of Circles Return to front slide Presentation 1 Formula for Area Presentation 2 Areas and Circumferences of Circles Presentation 3 Formula for Areas of Trapeziums, Parallelograms and Kites Presentation 4 Surface Area
Unit 13 Areas Formulae for Areas of Parallelograms, Trapeziums and Kites
Parallelogram Area = b x h = bh
Trapezium Area =
Kite Area =
Complete the table Rectangle Base Height 5 cm ? 3 cm 15 ? cm 2 4 cm ? 5 cm 20 ? cm 2 12 cm 12 ? cm 144 cm 2 12 cm ? 4 cm ? 8 cm 6 cm Area 48 cm 2
Unit 13 Areas You have finished viewing: Formula for Areas of Trapeziums, Parallelograms and Kites Return to front slide Presentation 1 Formula for Area Presentation 2 Areas and Circumferences of Circles Presentation 3 Formula for Areas of Trapeziums, Parallelograms and Kites Presentation 4 Surface Area
Unit 13 Areas Surface Area
z unfolds to give y x The surface area is: Find the surface area of the cuboid with sides 4 cm, 5 cm and 6 cm. When x = 4, y = 5, z = 6 ? ? ? ? ?
r unfolds to give h Area of the circles ? ? Area of the rectangle ? Total surface area ? ?
Area of the circles Area of the rectangle Total surface area Find the surface area of a can of height 10 cm and radius 3 cm When r = 3 cm, h = 10 cm ? ? ?
Unit 13 Areas You have finished viewing: Surface Area Return to front slide Presentation 1 Formula for Area Presentation 2 Areas and Circumferences of Circles Presentation 3 Formula for Areas of Trapeziums, Parallelograms and Kites Presentation 4 Surface Area