Equations Flashcards
Area of a Rectangle
Area of a Rectangle Multiply the length by the width A=L×W
Area of a Triangle
Area of a Triangle Multiply the base by the perpendicular height and divide by two.
A=1/2 x b x h
Area of a Parallelogram
Area of a Parallelogram Multiply the base by the height. A=b×h
Area of a Trapezium
Area of a Trapezium Add together the parallel sides and multiply by the height. Divide your answer by two. A=1/2(a+b)h
Area of a Circle
Area of a Circle Square the radius and multiply by pi. A=π x r x 2
Circumference of a Circle
Circumference of a Circle Double the radius and multiply by pi or multiply the diameter by pi. C=2 x π x r or C=π x d
Volume of a Cuboid
Volume of a Cuboid Multiply the length by the width by the height. V= L x W x H
Volume of a Prism
Volume of a Prism Multiply the cross sectional area of the prism by its length.
Volume of a Sphere
Volume of a Sphere Cube the radius and multiply by pi. Multiply your answer by four then divide by three. V=4/3 x π x r^3
Surface area of a Sphere
Surface Area of a Sphere Square the radius and multiply by pi. Multiply your answer by four. A=4 x π x r^2
Volume of a Cone
Volume of a Cone Square the base radius of the cone and multiply by pi. Multiply your answer by the perpendicular height. Divide your answer by three. V=1/3 x π x r^2 x h
Curved surface area of a Cone
Curved Surface Area of a Cone Multiply the base radius of the cone by pi. Multiply your answer by the length of the side of the cone. A=π x r x L
Volume of a Pyramid
Volume of a Pyramid Multiply the area of the base by the perpendicular height. Divide your answer by three.
Sine Rule
a / SinA = b / SinB = c / SinC
Cosine Rule
a^2 = b^2 + c^2 − 2 x b x c x CosA
