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Elis [28]
2 years ago
12

A rectangular piece of card has a perimeter of 40cm and width of 8cm.

Mathematics
1 answer:
Irina18 [472]2 years ago
3 0

Answer:

Area of the rectangular piece of card = 96 sq.cm

Step-by-step explanation:

here we go,

peremeter ( p ) = 2 × ( length (L) + width (B) )

so,

=》40 = 2 ( L + 8 )

=》40 / 2 = L + 8

=》20 = L + 8

=》L = 20 - 8

=》L = 12

so, length of the card = 12cm

now,

Area (A) = length (L) × width (B)

=》A = 12 × 8

=》Area = 96 sq.cm

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