Maths Flashcards
How do you work out the percentage increase between two values ?
Final value - initial value
Difference / initial value x 100 = percentage increase
What are the solutions of a graph ?
The points at which the line crosses the x-axis . Also known as the roots
How do you work out the frequencies of a histogram graph ?
Width of the bar x the length
How do you find the median in a historgram ?
Add all the frequencies together and dvide by 2
How do you work out the circumference of a circle ?
Pi x diameter
What are the four main ways to find out if a triangle is congruent ?
SSS
ASA
RHS
SAS
What is a volume of a sphere?
4/3 x pi x radius cubed
How do you work out the volume of a prism ?
Cross-sectional area x length
What is the volume of a cone ?
1/3 x pi x radius squared x height
What is the equation for sine rule ?
a/sin A= b / sin B = c / sin C
What is the equation for cosine rule ?
a squared = b squared + c squared - 2bc CosA
What is the equation for pressure ?
Force divided by area
What do angles in a triangle add up to ?
180 degrees
What do angles in a quadrilateral ?
360 degrees
What do angles in a pentagon add up to ?
540 degrees
