A thin wire 20 centimetres long is formed into a
rectangle. If the width of this rectangle is
4 centimetres, what is its length?
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3
Answer:
6cm
Step-by-step explanation:
Perimeter =20cm
Width(breadth) =4cm
Length=?
Therefore,
Perimeter of rectangle =2(l+b)
=>20=2(l+4)cm
=>20=2l + 8 cm
=>20-8=2l cm
=>12=2l cm
=>l=12/2 cm
=6cm
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