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The perimeter of a rectangle is 54cm. One side is xcm long and the other is 6cm longer. a) Form an equation involving x b) Solve the equation and write down the length of each of the sides |
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Answer» answer is 21 Step-by-step explanation: TOTAL perimeter of rectangle is 54cm Perimeter of rectangle =2×(l+b) ONE side=x second side =6 cm 2×(x+6) =2x+12 then 2x =54-12=42 2x=42 x=42÷2 x=21 check perimeter of rectangle =2× (l+b) =2×(21+6) =2×27 =54 |
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