tolong dibantu mtk hal 52 dari no6 sampai no 10 pleess pake keliiing yaa

[tex]7. \: luas = 250 \: m {}^{2} \\ ac = \sqrt{250} = 25cm \\ 8. \: luas = 3060m {}^{2} \\ t = \frac{luas}{a + b} \div 2 = \frac{3060}{170} \div 2 = \frac{3060}{85} = 36m \\ 9. \: luas = \pi \times r \times r = 3.14 \times 21 \times 21 = 65.94 \times 21 = 1384.74m {}^{2} \\ 10. \: d = 2 \times r = 2 \times 77cm = 1.54cm \\ \\ smoga \: membntu[/tex]