Answer: 258 envelopes
Explanation:
First find the area of the larger sheet of paper.
Convert the units to centimetres.
1 meter = 100 cm
3m 24 cm = 300 cm + 24 cm = 324 cm
1m 72 cm = 100 cm + 72 cm = 172 cm
Area = 324 * 172
= 55,728 cm²
The area of the envelope is:
= 18 * 12
= 216 cm²
The number of envelopes that can be made is:
= 55,728 / 216
= 258 envelopes
