K^2 - 100h^2
(k - 10h)(k + 10h)
Shorter <span>piece = x
longer </span><span>piece = 4x
x + 4x = 48.5
5x = 48.5
x = 48.5/5
x = 9.7 cm </span>← shorter piece
longer piece = 4x = 4 * 9.7 = 38.8 cm
Bananas are $0.49 per pound, and you want to buy 5.5 pounds of bananas.
0.49 x 5.5 = 2.695 <span>≈ 2.70
</span>
So the final answer is 2.70 dollars for 5.5 pounds of bananas.
