Question

A rectangular has a perimeter of 146cm and a length of 49cm. Its width is 2a cm. What will be the value of a?​

Answer 1

Answer:

Perimeter = 2(length + breadth)

146 = 2(49 + 2a)

49 + 2a = 146/2 = 73

2a = 73 - 49 = 24

Thus, a = 24/2 = 12

Answer 2

$\underline{ \underline{{ \huge{ \mathtt{Q}}} \sf {UESTION - }}}$

A rectangle has a perimeter of 146 cm and a length of 49 cm. It's with is 2a cm. What will be the value of a?

$\underline{ \underline{{ \huge { \mathtt{A}}}\sf {NSWER - }}}$

we know that,

$\boxed{ \gray{ \sf{Perimeter \: of \: rectangle = 2(l + b)}}}$

so,

$\sf \: Perimeter \: of \: rectangle = 2(l + b) \\ : \implies \sf \: 146 \: cm = 2(49 + 2a) \\ \sf : \implies \frac{146}{2} = 49 + 2a \\ \\ \sf : \implies73 = 49 + 2a \\ \sf : \implies73 - 49 = 2a \\ \sf : \implies24 = 2a \\ \sf : \implies \: a = \frac{ \cancel{24} \: ^{12} }{ \cancel{2} \: ^{1} } \\ \\ \boxed{ \green{\sf : \implies \: a = 12 \: \: \: ans...}}$

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