Hello, can you help me? “answered with an explanation” Thanks You.
Jawaban:
Dik:
tembok berbentuk persegi panjang, tingginya 200cm, keliling 1.040 cm
Dit:
luas tembok berapa cm²?
Jawab:
2× (t + l) = keliling
2× (200 + l) = 1.040
200 + l = 1.040 : 2
200 + l = 520
l = 520 – 200
l = 320
Cari luas tembok:
luas tembok = panjang (tinggi) × lebar
= 200 cm × 320 cm
= 64.000 cm²
luas tembok yang akan di cat adalah 64.000 cm²
B. 64.000 cm²
____________________________
● Lebar
= K/2 – p
= 1040/2 – 200
= 520 – 200
= 320 cm
● Luas
= p × l
= 200 × 320
= 64.000 cm²
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