Suatu persegi panjang memiliki=2x lebarnya jika keliling persegi panjang 54 meter berapakah luasnya
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Areta2000
P = 2xlebarnya kel = 2 ( p + l ) 54 m = 2 ( 2 L + L ) 54/2 = 3 L 27= 3 L 9 = Lebar
Panjang = ...? 54 = 2 ( P + 9 ) 54 = 2P + 18 54 - 18 = 2P 36 = 2P 36/2 = P 18 = Panjang
Luas Persegi panjang = p x l = 18 x 9 = 162
2 votes Thanks 1
Nattha
Panjang = 2 x l K = 54 K = 2(p + l) 54 = 2(2l + l) 54 = 2(3l) 54 = 6l l = 54/6 = 9 m
Panjang = 2 x l = 2 x 9 = 18 m
Luas = p x l = 18 x 9 = 162 m²
1 votes Thanks 1
owen1403
P = 2L | k = 2p + 2l | 54 = 2(2l) + 2l | 54 = 4l + 2l | 54 = 6l | L = 54/6 | L = 9 m. | P = 2L | P = 2*9 | P = 18 m. | L = P * L | L = 18 * 9 | L = 162 m ^2
kel = 2 ( p + l )
54 m = 2 ( 2 L + L )
54/2 = 3 L
27= 3 L
9 = Lebar
Panjang = ...?
54 = 2 ( P + 9 )
54 = 2P + 18
54 - 18 = 2P
36 = 2P
36/2 = P
18 = Panjang
Luas Persegi panjang = p x l
= 18 x 9 = 162
K = 54
K = 2(p + l)
54 = 2(2l + l)
54 = 2(3l)
54 = 6l
l = 54/6 = 9 m
Panjang = 2 x l
= 2 x 9 = 18 m
Luas = p x l
= 18 x 9
= 162 m²