Math Formulas (7th grade+ )

Guess what the name of the formula or what it is used for. For shapes, please write (Volume, Area, Perimeter, Surface Area...) of a (Shape name). For example, if the formula is a cubed, then your answer will be: Volume of a Cube. For other formulas, just write the name of the formula. Unnecessary parentheses may be added to avoid confusion. Good Luck! (I highly recommend not the cheat)
Quiz by AnimalGenius526
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Last updated: November 9, 2017
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First submittedOctober 18, 2017
Times taken63
Average score33.3%
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Formula
Answer
x=(-b±√(b^2-4ac))/2a
Quadratic Formula
Side Squared
Area of a Square
bh/2
Area of a Triangle
2πr
Circumference of a Circle
πr^2
Area of a Circle
h(πr^2)
Volume of a Cylinder
πab
Area of an Ellipse
h(a+b/2)
Area of a Trapezoid
Formula
Answer
1/4√5(5+2√5)a^2
Area of a Regular Pentagon
(3√3/2)a^2h
Volume of a Regular Hexagonal Prism
(4/3)(π)(a)(b)(c)
Volume of an Ellipsoid
(4/3)(π)(r^3)
Volume of a Sphere
2(1+√2)a^2
Area of a Regular Octagon
a^2+b^2=c^2
Pythagorean Theorem
((πr^2) x h)/3
Volume of a Cone
+1
Level 70
Nov 8, 2017
Could you accept Pythagoras's theorem? Also you need an extra bracket on the last one.
+1
Level 20
Nov 8, 2017
Sure! Thanks for the feedback!