Madison puts a stamp on an envelope. The stamp measures 1 inch on each side.
How can you find the area of the envelope that is not covered by the stamp?
The envelope is a rectangle that is 4 inches wide and 6 inches long. The square stamp is in the upper right corner of the envelope.
A.
Add the area of the stamp to the area of the envelope:
6
×
4
=
24
,
1
×
1
=
1
,
24
+
1
=
25
square inches.
B.
Subtract the area of the stamp from the area of the envelope:
6
×
4
=
24
,
1
×
1
=
1
,
24
−
1
=
23
square inches.
C.
Add
1
inch to each side of the envelope:
5
×
7
=
35
square inches.
D.
Subtract
1
inch from each side of the envelope:
3
×
5
=
15
square inches.
B. Subtract the area of the stamp from the area of the envelope: 6 × 4 = 24, 1 × 1 = 1, 24 − 1 = 23 square inches.
The correct answer is B. Subtract the area of the stamp from the area of the envelope: 6 × 4 = 24, 1 × 1 = 1, 24 - 1 = 23 square inches.
To find the area of the envelope that is not covered by the stamp, you need to consider the dimensions of the envelope and the stamp.
The envelope is a rectangle with a width of 4 inches and a length of 6 inches. The stamp is a square with sides measuring 1 inch.
To calculate the area that is not covered by the stamp, you have a couple of options:
Option A: Add the area of the stamp to the area of the envelope.
- Calculate the area of the envelope: 6 inches (length) x 4 inches (width) = 24 square inches.
- Calculate the area of the stamp: 1 inch (side length) x 1 inch (side length) = 1 square inch.
- Add the area of the stamp to the area of the envelope: 24 square inches + 1 square inch = 25 square inches.
Option B: Subtract the area of the stamp from the area of the envelope.
- Calculate the area of the envelope: 6 inches (length) x 4 inches (width) = 24 square inches.
- Calculate the area of the stamp: 1 inch (side length) x 1 inch (side length) = 1 square inch.
- Subtract the area of the stamp from the area of the envelope: 24 square inches - 1 square inch = 23 square inches.
Option C and D are incorrect as they do not take into account the dimensions of the stamp.
Therefore, the correct answer is option B: Subtract the area of the stamp from the area of the envelope: 23 square inches.