Respuesta :
Answer:7
Step-by-step explanation: 10 +10 +x+x=34
20+2x= 34
-20 20
2x=14 x=7
Answer: its width is 7cm
Step-by-step explanation:
The perimeter of a rectangle is the sum of twice its length plus twice its width.
perimeter = 2·length + 2·width
34centimeters = 2·10cm + 2·width
width = (34cm -20cm)/2 = 14cm/2 = 7cm
Answer: its width is 7cm