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Answers
Step-by-step explanation:
(a) area will be = 12×8 = 96 m²
perimeter will be = 2( l + b)
2×(12 + 8 )
2 × 20 = 40 m
(b) breadth = area / length
90 / 15 = 6 cm
breadth will be = 6 cm
perimeter will be = 2×(l+b)
= 2× (15+6)
= 2×21 = 42 cm
(c) Breadth is = 50 mm
perimeter is = 300 mm
length will be = perimeter / breadth
length = 300/50
6 mm
area will be = length ×breadth
= 6×50 = 300 mm²
(d) length is = 12 cm
perimeter is = 44 cm
breadth is = perimeter/ length
breadth is = 44/12 = 3.66 cm
area will be = length × breadth
= 12×3.66 = 43.2 cm²