- Hieu
- Mar 5
- 1 min read
Updated: Mar 18
Answer
The kid is 90 cm tall.
Explanation
Because he has the same height when sitting and standing and his upper body height (the top half) is the same in both cases, his lower body height must be the same in both cases.
When he is standing, his lower body height is his leg, which is 1/2 of total his height. When he is sitting, his lower body height is the height of the chair (40 cm) plus his thigh's thickness (1/9 of his height).
Call his total heigh H
=> 1/2 H = 1/9 H + 40 cm
=> 8/18 H = 40 cm
=> H = 90 cm
Free talk
Do you know how tall Chopper is?
90 cm (2'11'')
height shaming