Question

Answer the image. Also you don't need to explain your answer.

Answer 1

`13(1)/(4)\ inches`

Explanation:

To find the total length, you should add all lengths and calculate the sum. There are

3 buttons of length
`(1)/(4)` inch

2 buttons of length
`(3)/(8)` inch

4 buttons of length
`(1)/(2)` inch

2 buttons of length
`(5)/(8)` inch

3 buttons of length
`(3)/(4)` inch

2 buttons of length
`(7)/(8)` inch

2 buttons of length 1 inch

2 buttons of length
`1(1)/(4)` inches

Total length:

`3\cdot (1)/(4)+2\cdot (3)/(8)+4\cdot (1)/(2)+2\cdot (5)/(8)+3\cdot (3)/(4)+2\cdot (7)/(8)+2\cdot 1+2\cdot 1(1)/(4)=\\ \\=(3)/(4)+(3)/(4)+2+(5)/(4)+(9)/(4)+(7)/(4)+2+2\cdot (5)/(4)=\\ \\=4+(27)/(4)+(10)/(4)=\\ \\=4+(37)/(4)=\\ \\=4+9(1)/(4)=\\ \\=13(1)/(4)`