Question

Jwban no 7. 231 8. 945. 9. 1072 betul apa ngga?

Answer 1

No 7=105
No 8=94,815
No 9 =gambarnya kepotong
no7
⇔L1/2lingkaran+luas segitiga
⇔1/2×(22/7×7²)+91/2×14×4)
⇔1/2×154+28
⇔77+28
⇔105
no8
=luas persegi-luas lingkaran
⇔21×21-3,14×10,5²
⇔441-346,185
⇔94,815
no9
L ling Besar-L ling Kecil
⇔3,14×10,5²-3,14×5²
⇔346,185-78,5
⇔267,685