Question

A rectangle is 3p cm long and 2p cm wide. (a) Express the perimeter of the rectangle in terms of p. (b) When p= 12, find the perimeter of the rectangle.

Answer 1

Step-by-step explanation:

$l = 3p \: and \: b = 2p$

$(a) \: perimeter \: of \: the \: rectangle \: = 2(l + b)$

$so..2(3p + 2p) \: = 2 \times 5p \: = 10p$

$(b)when \: p = 12 \: then \: perimeter \:is \: \\ 3p = 3 \times 12 = 36 \\ 2p = 2 \times 12 = 24$

$now \: perimeter \: is \: \\ 2(l + b) = 2(36 + 24) \\ = 2 \times 60 \\ = 120$

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Answer 2

Find an answer to your question A rectangle is 3p cm long and 2p cm wide. (a) Express the perimeter of the rectangle in terms of p. (b) When p= 12, find the per