Question

Bantuin nomer 5 sampe 8 ya :)

Answer 1

No 5 154 6789 sebentar

Answer 2

5. luas = phi x r x r = 22/ 7 x 21 x 21 = 1386
keliling = 2 x phi x r = 2 x 22/7 x 21 = 132
6. luas = px l
44,8=3,5 xl
l= 44,8/3,5=12,8 atau 12  4/5
maka keliling = 2 x( p +l) = 2 (12 4/5 + 3 1/2)=32 3/5

7.kell ling= 2 x phi x r = 110
maka r = 110 / 2 x 22/7 = 17,5
luas = phi x rxr= 22/7 x 17,5 x 17,5 = 962,5

8. persegi s = 2,4 dm = 24 cm
luas = 24x24 = 576 cm persegi