Jawaban:
3. 172cm
4. 29cm
Penjelasan dengan langkah-langkah:
3. Keliling = ?
=> 2×(P+l)
=> 2×(56+30)
=> 2×86
=> 172cm
4. Lebar = ?
=> 142 ÷ 2
=> 71 - 42
=> 29cm
Pembahasan dan langkah-langkah
Soal no.3
Diketahui :
p = 56cm
l = 30cm
Ditanyakan :
K = ?
Jawab :
K = 2p + 2l
= 2 x 56 + 2 x 30
= 112 + 60
= 172cm
Soal no.4
K = 142cm
p = 42cm
l = ?
2l = K - 2p
= 142 - 2 x 42
= 142 - 84
2l = 58
l = 58 ÷ 2
l = 29cm
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Jawaban:
3. 172cm
4. 29cm
Penjelasan dengan langkah-langkah:
3. Keliling = ?
=> 2×(P+l)
=> 2×(56+30)
=> 2×86
=> 172cm
4. Lebar = ?
=> 142 ÷ 2
=> 71 - 42
=> 29cm
3. 172cm
4. 29cm
Pembahasan dan langkah-langkah
Soal no.3
Diketahui :
p = 56cm
l = 30cm
Ditanyakan :
K = ?
Jawab :
K = 2p + 2l
= 2 x 56 + 2 x 30
= 112 + 60
= 172cm
Soal no.4
Diketahui :
K = 142cm
p = 42cm
Ditanyakan :
l = ?
Jawab :
K = 2p + 2l
2l = K - 2p
= 142 - 2 x 42
= 142 - 84
2l = 58
l = 58 ÷ 2
l = 29cm
semoga membantu