Length of a rectangular field is 30m less than twice of its breadth perimeter of the field is 420m
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Step-by-step explanation:
L = 2B -30
2 (L+B)= 420
L + B = 210
2B-30+B = 210
3 B = 240
B = 80m
L = 2(80)-30
= 130m
area = L* B
= 130 *80 = 10400m²
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