Question

Jawab nomor 2 sama 4 ya pake cara makasi

Answer 1

2)
Jawabannya C, caranya dibuktikan satu-satu
Luas = p x l
300 = p x 12
p = 300 / 12
p = 25 cm

Keliling = 2 (25 + 12)
Keliling = 2 x 37
Keliling = 74 cm ----> TERBUKTI

4)
keliling = 4s
60 = 4s
s = 60 / 4
s = 15 cm

Mencari diagonal 2 menggunakan pitagoras
1/2 diagonal 1 = 1/2 x 18 = 9 cm

1/2 d2 = √15^2 - 9^2
1/2 d2 = √225 - 81
1/2 d2 = √144
1/2 d2 = 12 cm
d2 = 12 x 2
d2 = 24 cm

Luas belah ketupat = 1/2 x d1 x d2
= 1/2 x 18 x 24
= 216 cm2