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2014-05-17T13:54:32+07:00

Keliling=22m
l= 4m
Keliling= 2p + 2l
22m=2p+8m
14m=2p
p=7m -----------> panjang

Luas=p
×l = 7m × 4m =28m²
soalnya m atau cm...?
m :v lupa :v wkwkwk
2014-05-17T13:54:37+07:00
K persegi panjang= 2p + 2l
22 = 2p+ 2.4
22= 2p+8
2p= 22-8
2p= 14
p= 14/2
p= 7

L= p x l
L= 7 x 4
L= 28 m
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