The perimeter of a rectangle is 356 ft. if the width of the garden is 81 ft what is it's length. fast, only if you know the answer. explain steps too . 

Hello!

In the process of finding the perimeter, you have to multiply the length and width by 2. So in order to find the length, you'll need to multiply 81 by 2. After doing so, you'll get 162. Now you'll need to subtract 162 from 356 to get 194. Lastly, you'll need to divide 194 by 2 to get the length of the rectangle. After you've divided, you'll get your length.

The length of the rectangle is 97ft

I hope this helps!

If one side of the garden is 81, add it together to get 162. subtract that from 356 then half it to get length. 97 is the length

A balloon contains 353 kg Helium.

Step-by-step explanation:

A weather balloon holds 2000 cubic meters of helium.

Density of Helium = 0.1765 kilograms per cubic meter.

Then we have to calculate the weight of helium in the balloon.

Since

Now we put the values in the formula to get the mass of Helium.

Mass = 2000×0.1765 = 353 Kg.

Therefore 353 Kilograms of Helium is contained in a balloon.