The correct formula for finding a circle's circumference is...

C = πR^2 (NB ^ means to the power of)

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Maths Revision

D Arora 8 questions 4.7 (3 ratings)

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1Which of these triangles can you apply Pythagorus' theorem to?
1. Ai
2. Bii
3. Ciii
4. Div
5. Ev
6. Fvi
2In which of these examples is 2 a coefficient?
1. A5 x 2
2. Be - 2
3. Cxy + 2
4. D2y
3a^4 x a^5 = [blank_start]a^9[blank_end] (NB. ^ means to the power of. Be sure to use this in your answer)
1. Aa^9
4a^4 divided by a^2 = [blank_start]a^2[blank_end] (NB. ^ means to the power of. Be sure to use this in your answer)
1. Aa^2
5(a^7)^3 = [blank_start]a^21[blank_end] (NB. ^ means to the power of. Be sure to use this in your answer)
1. Aa^21
6Simplify this equation:
1. A5(x-1)
2. B10
3. Cx - 1
4. D2
7What is the approximate circumference of this circle
1. A31.4159... mm
2. B3.14159... mm
3. C1.57079 mm
4. D15.7079 mm
8The correct formula for finding a circle's circumference is...
1. AC = π^2 x D
2. BC = πR^2 (NB ^ means to the power of)
3. CC = πD
4. DC = π - D