Page 83 - NUMINO TB_4B
P. 83
126_G4U24_G5U6˙—» ¿º 2011.3.23 5:36 PM ˘ ` 72 PDF_In 2540DPI 150LPI T
UNIT
24 Why Is the Cover of Manhole Round?
Thomas is walking over a manhole, which does not have its cover.
How big his step should be for him to walk over the manhole?
Draw a line and measure its length.
The cover of the manhole is round.
It prevents the cover from falling in.
The diameter of the circle is equal
in all directions.
72
UNIT
24 Why Is the Cover of Manhole Round?
Thomas is walking over a manhole, which does not have its cover.
How big his step should be for him to walk over the manhole?
Draw a line and measure its length.
The cover of the manhole is round.
It prevents the cover from falling in.
The diameter of the circle is equal
in all directions.
72
