The length i of a rectangle is twice its width. the perimeter is 60 ft. find it area

A = 200ft²

Info:

l = 2w

P=2[(2w)+w)

P = 60

A=w(2w)

Step-by-step explanation:

Since we know the value of the perimeter, it's actually easy to solve with the information listed above.

Firstly, since the equation has the same variable, you can actually add them or multiply. You can write the perimeter in a new way,

P=6w

which means w = , or 10ft.

Now we know the width you can get the length by multiplying it by 2. Let's get the rectangle area.

A=w(2w) or A=wl

A=10(2x10) or A=10(20)

A = 200ft²

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours