old p = 2(1.3+4.8) = ____ ft
since both sides are now 0.6 ft longer,
new p = old p + 1.2 ft
a rectangular mural measures 1.3 feet by 4.8 feet. harmony creates a new mural that is 0.6 feet longer. what is the perimeter of harmonys new mural?
3 answers
2.5
No, that is not correct.
The old perimeter is:
p = 2(1.3 + 4.8) = 2(6.1) = 12.2 feet
Since the new mural is 0.6 feet longer in one dimension (we don't know which), the new dimensions of the mural are:
1.3 feet by (4.8 + 0.6) feet OR 4.8 feet by (1.3 + 0.6) feet
In the first case, the new perimeter would be:
p' = 2(1.3 + 5.4) = 2(6.7) = 13.4 feet
In the second case, the new perimeter would be:
p' = 2(4.8 + 1.9) = 2(6.7) = 13.4 feet
Therefore, the perimeter of Harmony's new mural is approximately 13.4 feet, depending on which dimension was increased by 0.6 feet.
The old perimeter is:
p = 2(1.3 + 4.8) = 2(6.1) = 12.2 feet
Since the new mural is 0.6 feet longer in one dimension (we don't know which), the new dimensions of the mural are:
1.3 feet by (4.8 + 0.6) feet OR 4.8 feet by (1.3 + 0.6) feet
In the first case, the new perimeter would be:
p' = 2(1.3 + 5.4) = 2(6.7) = 13.4 feet
In the second case, the new perimeter would be:
p' = 2(4.8 + 1.9) = 2(6.7) = 13.4 feet
Therefore, the perimeter of Harmony's new mural is approximately 13.4 feet, depending on which dimension was increased by 0.6 feet.
4 answers