Question

The area of a rectangular field is equal to 300 square meters. Its perimeter is equal to 70 meters. Find the length and width of this rectangle.

Answer 1

Let the length and the width of the field be L and W

Perimeter = 2(W + L) = 70

=> W + L = 35

=> W = 35 - L

Area = W * L = 300

=> (35 - L)* L = 300

=> 35 L - L^2 = 300

=> L^2 - 35 L + 300 = 0

=> L^2 - 15 L - 20 L + 300 = 0

=> L( L-15) - 20( L- 15) = 0

=> (L - 20) ( L -15) = 0

So L can be 20 and 15

W = 15 and 20

As length is greater than the width, we have the length equal to 20 and the width equal to 15.

Answer 2

\(\color{#0cbb34}{\text{Originally Posted by}}\) @cpl106
Let the length and the width of the field be L and W

Perimeter = 2(W + L) = 70

=> W + L = 35

=> W = 35 - L

Area = W * L = 300

=> (35 - L)* L = 300

=> 35 L - L^2 = 300

=> L^2 - 35 L + 300 = 0

=> L^2 - 15 L - 20 L + 300 = 0

=> L( L-15) - 20( L- 15) = 0

=> (L - 20) ( L -15) = 0

So L can be 20 and 15

W = 15 and 20

As length is greater than the width, we have the length equal to 20 and the width equal to 15.
\(\color{#0cbb34}{\text{End of Quote}}\)
thanks,but u didnt need to give me the direct answer

Answer 3

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Hoodmemes
\(\color{#0cbb34}{\text{Originally Posted by}}\) @cpl106
Let the length and the width of the field be L and W

Perimeter = 2(W + L) = 70

=> W + L = 35

=> W = 35 - L

Area = W * L = 300

=> (35 - L)* L = 300

=> 35 L - L^2 = 300

=> L^2 - 35 L + 300 = 0

=> L^2 - 15 L - 20 L + 300 = 0

=> L( L-15) - 20( L- 15) = 0

=> (L - 20) ( L -15) = 0

So L can be 20 and 15

W = 15 and 20

As length is greater than the width, we have the length equal to 20 and the width equal to 15.
\(\color{#0cbb34}{\text{End of Quote}}\)
thanks,but u didnt need to give me the direct answer
\(\color{#0cbb34}{\text{End of Quote}}\)
oh my bad

Answer 4

Let the length and the width of the field be L and W

Perimeter = 2(W + L) = 70

i was to late but i think we were all on the same page

Answer 5

The person who makes it has no need of it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Answer 6

idk Shakespeare

Answer 7

no try again

Answer 8

cpl you wanna try?

Answer 9

coffin.

Answer 10

\(\color{#0cbb34}{\text{Originally Posted by}}\) @cooksd2023
coffin.
\(\color{#0cbb34}{\text{End of Quote}}\)
correct

Answer 11

wow

Answer 12

I turn once, what is out will not get in. I turn again, what is in will not get out. What am I?

Answer 13

a door

Answer 14

nope but close

Answer 15

umm a key

Answer 16

\(\color{#0cbb34}{\text{Originally Posted by}}\) @cooksd2023
umm a key
\(\color{#0cbb34}{\text{End of Quote}}\)
correct

Answer 17

omg im smart

Answer 18

two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Answer 19

that one is a lil hard umm

Answer 20

its a letter

Answer 21

the letter r ?

Answer 22

\(\color{#0cbb34}{\text{Originally Posted by}}\) @cooksd2023
the letter r ?
\(\color{#0cbb34}{\text{End of Quote}}\)
correct

Answer 23

wow i thought i got it wrong i wish i can get my test right like these riddles

Answer 24

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

Answer 25

lol

Answer 26

a