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NISA [10]
2 years ago
15

Work out the area of a rectangle with base, b=28mm and perimeter, P=74mm.

Mathematics
2 answers:
ratelena [41]2 years ago
4 0

<u>Given</u><u>:</u>

  • Base,b= 28 mm
  • Perimeter,P= 74 mm

<u>To</u><u> </u><u>find</u><u> </u><u>out</u><u>:</u>

the area of a rectangle?

<u>Formula</u><u> </u><u>used</u><u>:</u>

  • Perimeter of rectangle = 2(l+b)
  • Area of rectangle = length × breadth

<u>Solution</u><u>:</u>

<em>We know that </em><em>,</em>

<em> </em><em> </em>Perimeter of rectangle = 2(l+b)

74= 2(l+28)

74=2l +56

2l=74-56

2l=18

length, l= 9

Now,

Area of rectangle = length × breadth

= 9 × 28

= 252 mm²

zhannawk [14.2K]2 years ago
3 0

Answer:

28 \times 2 =5 6 \\ 74 - 56 = 18 \\ 18  \div 2 = 9 \\ width  = 9 \\ area = 9 \times 28 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 252mm ^{2}

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