help me match these formulas pleasee:(
ill put the pics..

1. triangle
2. circle sector
3. circle segment
4. rectangle
5. circle circumference
6. circle area
7. regular polygon
8. equilateral triangle

Answer :

1. [tex]A= \frac{ah_a}{2},P=a+b+c [/tex]
2. [tex]A= \frac{r^2\pi\alpha}{360^o} [/tex]
3. [tex]l= \frac{r\pi\alpha}{180^o} [/tex]
4. [tex]A=ab,P=2(a+b)[/tex]
5. [tex]C=2r\pi[/tex]
6. [tex]A=r^2\pi[/tex]
7. [tex]P=na,S_n=(n-2)180^o,\alpha= \frac{S_n}{n} [/tex]
8. [tex]P=3a,A= \frac{a^2\sqrt{3}}{4} [/tex]

Answer:

A= 1/4 s2 sqrt3 -- equilateral triangle

A= bh -- rectangle

A= Pi r2 -- circle area

A= 1/2 h (b1 + b2) -- trapezoid

C= Pi d -- circle circumference

A= base x altitude -- parallelogram

A= 1/2 ap -- regular polygon

A= 1/2 bh -- triangle

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