ko biết làm
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Ta có chiều dài hình chữ nhật là \(\frac{6}{7}\)+\(\frac{1}{2}\)=\(\frac{19}{14}\)m
Chu Vi hcn là \(\left(\frac{6}{7}+\frac{19}{14}\right)\)x2=\(\frac{31}{7}m\)
Diện tích hcn là \(\frac{6}{7}X\frac{19}{14}=\frac{57}{49}m^2\)
d/s
tổng chiều dài và rộng là:2700-2340=360(m)
chiều rộng là:(360-8):2=176(m)
chiều dài là:360-176=184(m)
đáp số:dài:184 mét , rộng:176m
nhớ k hộ mình nha
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móa hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh