# A rectangle has an area of 12cm². The length of one side is 4cm. What is the perimeter of the rectangle?

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• ?
Lv 7
2 weeks ago

Area = L x W = 12 cm²

........⇒ L = 12 cm² / W

....................W = 4 cm

........⇒ L = 12 cm² / (4 cm)

........⇒ L = 3 cm

Perimeter = 2 (L + W)

.................= 2 (3 cm + 4 cm)

.................= 2 (7 cm)

.................= 14 cm.................ANS

• Tacitus2 weeks agoReport

Yes this is the right answer .It was a question on the Royal Navy Numeracy test....(its online) I just couldn't work it out

• 2 weeks ago

• Lôn
Lv 7
2 weeks ago

The sides are 4,3,4 and 3

Area = 4 x 3 = 12 sq cm

Perimeter = 4 + 3 + 4 + 3 = 14 cm.

• 2 weeks ago

A rectangle has an area of 12 cm².

The length of one side is 4 cm.

The perimeter of the rectangle is 14 cm.

• Anonymous
2 weeks ago

The area of the rectangle is the length x the width

So .. 12 = 4 x ?

? = 12/4

? = 3

So .. the perimeter is 3 + 3 + 4 + 4 = 12cm

• Tacitus2 weeks agoReport

For Fun I was doing the Royal Navy Numeracy test....(you can find it online) The correct answer was 14....The other possible answers were 18,16, and 24......Thanks for trying I didn't have a clue how to work it out

• David
Lv 7
2 weeks ago

The other side of the rectangle is 3cm and its perimeter is 3+4+3+4 = 14cm