Formulas 0.0 / 5 ? MathematicsAll FormulasGCSEEdexcel Created by: YasgrantCreated on: 11-02-15 19:47 69375108214 Across 1. What is 'a^2=b^2+c^2-2bcCosA' the formula for? (6) 4. Half the sum of the parallel sides, times the height between them is how to calculate the area of a _________ (9) 5. Negative b plus or minus the square root of b squared minus 4 x b x c over 2a is which formula? (9) 9. '4 x pi x radius^2' is the volume of which 3d shape? (6) Down 2. Area of the cross section x length is how to work out what? (6) 3. Frequency density is equal to __________ divided by the class width? (Histogram) (9) 6. What type of triangle would you use '1/2absinC' to work out the area of? (3, 5, 6) 7. 'x^2 + y^2 = r^2' is the equation of what 2d shape? (6) 8. When trying to solve simultaneous equations and the signs are the same, what do you do? (8) 10. When trying to solve simultaneous equations and the signs are different, what do you do? (3)
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