Jawapan

2015-09-30T22:12:12+08:00
Formula luas bulatan =  \pi j^2

formula ukur lilit bulatan = 2 \pi j
2015-10-04T00:22:39+08:00

formula lilitan bulatan =2×22/7×r
=2×3.142×2
formula luas bulatan
= 2×22/7×r²
=2×3.142×r²
formula lengkok bulatan
=pjg lengkok ÷lilitan bulatan= sudut titik tgh÷360°
Formula luas sektor
=sudut sektor ÷360°= luas sektor ÷luas bulatan