complete question:
For a designer suit, Daniel must specify his waist size in centimeters. If there are 12 inches in a foot and 30.5 centimeters in a foot, then what size should Daniel specify, in centimeters, if his waist size in inches is 34 inches? (You may use a calculator on this problem; answer to the nearest tenth.)
Answer:
Daniel waist size in cm ≈ 86.4 cm
Explanation:
The designer wants Daniel to express his waist size in centimetres. But his waist size was given in inches .
Let us convert the unit base on the relationship given above
12 inches = 1 foot
34 inches = ? foot
cross multiply
34/12
2.83 ft
Therefore,
1 foot = 30.5 cm
2.83 = ? cm
cross multiply
2.83 × 30.5
86.416
Daniel waist size in cm = 86.416
Daniel waist size in cm ≈ 86.4 cm