Q. Sebuah persegi panjang panjangnya 15cm dan kelilingnya 80 cm.Tentukan Luas persegipanjang tersebu.... Question from @Xnayz01

July 2022 2 23 Report

Q.

Sebuah persegi panjang panjangnya 15cm dan kelilingnya 80 cm.Tentukan Luas persegipanjang tersebut !

pakai cara
jangan ngasal
jangan copas

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UnU

NadiyaPetrofa

Penjelasan dengan langkah-langkah:

K = 2p + 2l

80 = 2.15 + 2l

80 = 30 + 2l

80 - 30 = 2l

50 = 2l

l = 50/2

l = 25 cm

L = p × l

L = 15 × 25

L = 375 cm²

3 votes Thanks 2

kareninajovanka

Penyelesaian ☁️

Keliling = 2p + 2l

80 = (2×15) + 2l

80 = 30 + 2l

80-30 = 50

luas = 50 ÷ 2

luas = 25 cm

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L = p × l

L = 15 × 25

L = 375 cm²

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1 votes Thanks 1

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