Hello!
To find out if this food is enough we will add together all of the prices and multiply it by three to see if it is enough.
3(4.89+5+8.49)=55.14
Yes! They will have enough money with $4.86 to spare!
I hope this helps!
If it is area you're looking for, the answer is 7.92 cm^2, or ~7 11/12 cm^2.
The measures of x and y are 291.
First. we use the Pythagorean theorem:

Add the numbers in

start simplifying


So, the leg has a length of 40 mm.