. Dziekuję bardzo.
| h | h | |||
sin600= | . h=2r. sin 30 0= | |||
| c | d |
| √3 | 2r | 1 | 2r | ||||
= | . | = | |||||
| 2 | c | 2 | d |
| 4r | ||
c= | . d=4r | |
| √3 |
| 4r | ||
a+b= | +4r | |
| √3 |
| (a+b)*h | ||
P= | =(a+b)*r | |
| 2 |
| 4r | ||
8√3=( | +4r)*r/*√3 | |
| √3 |
| 6 | ||
r2= | ||
| √3+1 |
| 6(√3−1) | ||
r=√ | ||
| 2 |