You take it like this=
8
-3
~~
3
+
3
+
3
-
1
~~
(4×2)
-
3
~~
[[5]]
《5+8》
/ \
| 13 |
\ /
First we can distribute the 8
so we get
8c + 80 + 20
then we can add the 80 and 20 together
8c + 100
and that would be our simplified version :)
8c + 100
Π ≈ 3
Therefore a good approximation would be 24 + (6 × 3) = 42cm
Your options give us choices of 41cm and 43 cm.
Because π is a little bit greater than 3, the real answer will be a little bit above 42 cm.
Hence, 43 cm is the closest approximation.
