bantu jwb yaaa , pake caraa !!

Penyelesaian :
No 9
Luas segitiga
= 1/2 × a × t
= 1/2 × 25 cm × 10 cm
= 125 cm^2

Keliling segitiga
= s + s + s
= 25 cm + 10 cm + 15 cm
= 50 cm

No 10
Panjang sebenarnya
= 15 cm × 100
= 1500 cm
= 15 m

Lebar sebenarnya
= 10 cm × 100
= 1000 cn
= 10 m

Luas sebenarnya
= p × l
= 15 m × 10 m
= 150 m^2

Good Luck :)
Selamat Belajar !