Question

if the permeter of a rectangle is 60 meters and its area is 200 square meter then one of it's sides must be ------ the other?
options:
A=one third of
B=triple
C=double
D=one tenth of

Answer 1

Do you know how to solve simultaneous equations?

Answer 2

yes

Answer 3

So the equation says that if 'a' and 'b' are the two adjacent sides, then:

ab = 200
2(a + b) = 60

Answer 4

draw out a rectangle
you should have 2 lengths and 2 widths
just remember perimeter = l + l + w + w
and area = length times width

Answer 5

@laraib Can you solve the equation I gave ya?

Answer 6

yes m solving

Answer 7

If I were you, I'd be using the eyeball method.

Answer 8

how? tell me plz

Answer 9

Two numbers that add up to 30 and multiply to get 200.

Answer 10

Clearly, those numbers are 20 and 10 right?

Answer 11

yes that's how i solved it

Answer 12

very good! So now look at the choices you have in your question.

Answer 13

it would be DOUBLE.right?

Answer 14

Yes :)

Answer 15

thanks.
can u plz suggest me any website from where i can prepare for aptitude test of universities?

Answer 16

http://openstudy.com :)

Answer 17

but here ill get the solution of those questions which i have
i want to prepare topic wise

Answer 18

You can find a good book.

Answer 19

here on open study?

Answer 20

Nope, not here... search for an ebook.

Answer 21

if i^2= -1 then i^23+i^12+i^11 /10 =?

Answer 22

what is ebook?

Answer 23

This?\[\rm {i^{23} + i^{12}+{i^{11} }\over 10}\]

Answer 24

yup

Answer 25

Okay, factor.

Answer 26

it's 11 i guess not 23

Answer 27

there is a misprint actually

Answer 28

?

Answer 29

i^11 instead of i^23

Answer 30

So this?\[\rm {i^{11} + i^{12}+i^{11}\over 10}\]

Answer 31

got it?

Answer 32

yup :)

Answer 33

Can you factor it?

Answer 34

yes

Answer 35

So do it. :P

Answer 36

but i didnt get the correct answer

Answer 37

Can you just show me how you factored it?

Answer 38

you give me the solution

Answer 39

?

Answer 40

i got -2i+1 / 10

Answer 41

\[\rm {i^{11}(1 + 1 + i)}\]

Answer 42

Can you figure out what \(\rm i^{11}\) is?

Answer 43

options are 0.1
0
-1
1

Answer 44

yup it's -i

Answer 45

Yes.

Answer 46

You have\[\rm {-i(2 + i) \over 10}\]

Answer 47

None of the choices...

Answer 48

if only real part is asked then there is an option

Answer 49

Yep.

Answer 50

ok

Answer 51

@laraib Use distributive property.

Answer 52

if two vertices of an equilateral triangle are (2,3) and (5,3) then the area of the triangle is?