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11 B3 MATHS 5TH FEB 2010
N. Stott
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Use your revision cards to remember the formulae for… The area of a circle The circumference of a circle The area of a triangle The area of a parallelogram The area of a trapezium The area of a rectangle The volume of a cuboid The volume of a prism
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1.Area of a Triangle
bh2
1 Area
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2. Area of a Rectangle
WidthLength Area
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3. Area of a Circle
2 Area r
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4. Area of a Parallelogram
bh Area
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5. Area of a Trapezium
2
)( Area
hBA
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6. Circumference of a Circle
r2 C
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7. Volume of a Cuboid
Height WidthLength Volume
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8. Volume of a Prism
Length Area Volume
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Solving Equations Mixed Exercise1. y + 7 = 202. 7x = 843. 8y -3 =294. 3x-10 = 2x-35. 4(3x-1) = 3(3x+2)
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Q1 & Q2 Solutions
y+7 = 20y=20-7y=13
7x = 84x=84/7x=12
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Q3 Solution
8y-3=298y=29+3
8y=32y=32/8
y=4
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Q4 & Q5 Solution
3x-10 = 2x-33x – 2x = -3 +10
x = 7
4(3x-1) = 3(3x+2)12x-4 = 9x+612x-9x = 6+4
3x=10x=10/3 or 3 1/3
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Homework For Monday 8th
GCSE Maths Work Book Page 78 Questions 1-3