Question

Tolong dijawab ya, yg no. 15

Answer 1

Verified answer

Please, let me answer your question :)
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Mapel : Matematika
Tentang : Skala dan Bangun Datar
Pembahasan :

Diketahui :
- Bangun : Persegi Panjang
- PP : 20 cm
- LP : 12 cm
- S : 1:400 > 1/400

Ditanya :
- Luas Sebenarnya

PS= PP/S
PS= 20/1/400
PS= 20 x 400
PS= 8000 cm > 80 m

LS= LP/S
LS= 12/1/400
LS= 12 x 400
LS= 4800 cm > 48 m

Luas Sebenarnya : p x l
Luas Sebenarnya : 80 x 48
Luas Sebenarnya : 3840 cm²

Jadi, yg A jawabannya.

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Answer 2

Verified answer

MAPEL = MATEMATIKA
BAB SKALA & PERBANDINGAN

dikatahui =
panjang = 20cm
lebar = 12cm
skala = 1 : 400 ➡ 1/400

ditanya = luas kebun sebenarnya??

panjang sebenarnya :
PS = 1/400 ÷ 20
PS = 400/1 × 20
PS = 8000cm

lebar sebenarnya :
LS = 1/400 ÷ 12
LS = 400/1 × 12
LS = 4800cm

luas kebun = p × l
= 8000cm × 4800cm
= 38.400.000cm² ➡ 3840m²

semoga membantu