Need to be done

a square of area 36 cm’ is cut to make two rectangles, a and b.
area = 36 cm
the ratio of area a to area b is 2: 1
work out the dimensions of rectangles a and b.
rectangle a
rectangle b
length: cm length:
width:
cm
width:

rectangle A:

LENGTH:9

WİDTH:6

rectangle B:

LENGTH:9

WİDTH:3

Step-by-step explanation:

if you want to find the length of a square you should know that in a square all 4 sides lengths are the same so the are is give as 36 to find 1 side of the length we have to divide 36 with 4(because there are 4 sides)

which means the lengths of each side is 9.

it is the same as in rectangle a and b length hasn't changed only the width has changed.

we can also find the width with the information given us about its ratio.  

it says that The ratio of area A to area B is 2:1

the length is 9:

we can make it simple like this lets say 2x and 1x has to give us 9

so we can say 3x=9,x=3

to find the width we can say that 2x width is for rectangle A and 1 x is rectangle B. so x was 3:

2x=6

1x=3

these are the widths of rectangle A and B

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

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