Question

Hitunglah luas dan keliling dr bangun tersebut?

Answer 1

Keliling = jumlah semua sisi
k= 2(42)+2(15)+10+50
k = 174 cm
Luas
L = L Δ + L pp
L = 2(1/2 * a * t)+(p*l)
L = 2( 1/2 * 20*30) + (10*15)
L = 600+150
L = 750 cm^ 2

Answer 2

Keliling = 50 cm + (2 x 42 cm) + (2 x 15 cm) + 10 cm = 174 cm
luas = segitiga = a x t : 2 = 50 cm x 30 cm : 2 = 750 cm2
          persegi panjang = p x l = 15 cm x 10 cm = 150 cm2
luas bangun = 750 cm2 + 150 cm2 = 900 cm2
maaf kalo salah