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1) Find the area of this circle:. 6cm. 6cm. 1) Find the area of this circle:. 6cm. 6cm. 28.3cm². Area = r ² = x 3 ² = 28.3 cm ² . 2) Find the area of this circle:. 10cm. 2) Find the area of this circle:. 78.5 cm ². 10cm. Area = r ²

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**1) Find the area of this circle:**6cm 6cm**1) Find the area of this circle:**6cm 6cm • 28.3cm² Area = r² = x 3² = 28.3 cm²**2) Find the area of this circle:**• 78.5 cm² 10cm Area = r² = x 5² = 78.5 cm²**3) Find the area of this circle. Leave your answer in terms**of : 8cm**3) Find the area of this circle. Leave your answer in terms**of : 16 cm² 8cm**Cylinders**• Aim: to calculate the volume of a cylinder**A cylinder is a type of prism.**Area of a circle = r² Volume of a prism = Area of cross-section x length/height Volume of cylinder = r² h**Calculate the volume of the cylinder:**5cm 6cm Volume of cylinder = r² h Volume = x (2.5)² x 6 = 37.5 = 117.8 cm³ (to 1 dp)**Calculate the volume of the cylinder:**10cm 13cm Volume of cylinder = r² h Volume = x 5² x 13 = 325 = 1021.0 cm³ (to 1 dp)**I don’t know how to calculate the volume and of a**cylinder. I think I know how to calculate the volume of a cylinder, but need more practice. I know how to calculate the volume of a cylinder.**Surface Area of a Cylinder**Circumference = 2 r or d Height (h) d h Surface area of curved part of cylinder = d h**Area of top circle = r²**Surface area of curved part of cylinder = d h Area of bottom circle = r² Total Surface Area of a Cylinder = d h + 2 r²**Calculate the total surface area**of the cylinder: 4cm 6cm Surface Area = ( x 4 x 6) + (2 x x 2²) = 24 + 8 = 32 = 100.5 cm³ (to 1 d.p.) Total Surface Area of a Cylinder = d h + 2 r²**Calculate the total surface area**of the cylinder: 8cm 10cm Surface Area = ( x 8 x 10) + (2 x x 4²) = 80 + 32 = 112 = 351.9 cm³ (to 1 d.p.) Total Surface Area of a Cylinder = d h + 2 r²**Page 105 – 106; Ex 4E**Q1, Q2a, Q3, Q5, Q6

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