Question

how many envelopes can be made out of a sheet of paper 3 metre 24 cm by 1 metre 72 CM if each envelope requires a piece of size 18 cm by 12 CM

Answer 1

size of sheet
length= 3m 24cm = 324cm
width = 1m 72cm =172cm

size of envelop = 18cm × 12 cm

Number of envelopes= 324×172/(18×12) = 258

Answer 2

Answer:

$number \: of \: envelopes \\made \: by \: the \: sheet = 258$

Step-by-step explanation:

Dimensions of the sheet:

Length (L) = 3m 24 cm,

= 300 cm + 24 cm

= 324 cm

Breadth (B) = 1m 72 cm

= 100 cm + 72 cm

= 172 cm

Dimensions of each Envelope:

length (l) = 18 cm

breadth (b) = 12 cm

Let number of envelopes made by the sheet = n

$n = \frac{Area \:of \: the \:sheet}{Area \: of \: each \: envelope }\\=\frac{L\times B}{l\times b}\\=\frac{324\times 172}{18\times 12}$

After cancellation, we get

$= 258$

Therefore,

$number \: of \: envelopes \\made \: by \: the \: sheet = 258$

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