Question

If  of the figure below is colored then x = 
 

Question 9:
A square of side 8cm has the same perimeter as a rectangle. If the ratio of the width of the rectangle to its length is 1:3 then its area is  

Question 10:
The cost of a movie ticket is 5 dollars. The cost for 12 people to each of a movie ticket and a soft drink is 72 dollars. What is the cost of a soft drink? 
Answer:  dollars

Answer 1

q9.

chu vi hình chữ nhật (hình vuông) là: 8*4=32(cm)

chiều dài hcn là: 32:2:(1+3)*3=12(cm)

chiều rộng hcn là: 32:2-12=4(cm)

dt hcn là:12*4=48(cm²)

đáp số:

Answer 2

Q₉:THE PERIMETER OF THE SQUARE IS ;

   8 X 4 = 32 ( CM ) 

SO , THE PERIMETER OF THE RECTANGLE IS 32 CM .

  HALF OF THE RECTANGLE IS :

   32 : 2 = 16 ( CM ) 

THE WIDTH OF THE RECTANGLE IS :

   16 : ( 3 + 1 ) X 1 = 4 ( CM )

THE LENGTH OF THE RECTANGLE IS :

   4 X 3 = 12 ( CM )

 ITS AREA IS :

    12 X 4 = 48 ( CM ²)

          ANSWER : 48 CM ² 

Q₁₀: THE COST FOR 12 PEOPLE  TO EACH OF A MOVIE KET IS :

               5 X 12 = 60 ( DOLLARS )

      THE COST OF A SOFT DRINK IS :

             72 - 60 = 12 ( DOLLARS )

                    ANSWER: 12 DOLLARS