1.

ABCD is a rectangle AB= 2x+5 ,BC=20 and AD= 3x+5 ,find the sum of four sides?​

Answer»

Answer:

70

Step-by-step explanation:

AB = CD = 2x + 5

BC = AD

20 = 3x + 5

3x = 15

x = 5

so,

AB = CD = 2x + 5

2*5 + 5

10 + 5

15

AB = CD = 15

BC = AD = 20

the sum of four SIDES = AB + CD + BC + AD

15 +15 + 20 + 20

70



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