Answer:
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Step-by-step explanation:
Answer: 200cm
Step-by-step explanation:
The center Planck is a square of length 8cm.
The 4 next planks are of 16 cm each
And the next 4 Planks are of 32 cm each.
8 + 4(8×2) + 4(8×4)
8 + 4(16) + 4(32)
8 + 64 + 128
200 cm
Length of the original plank is 200cm
Options :
4+4+4+4
8+8+8+8
(-1)(4+4+4+4)
(-8) + (-8) + (-8) + (-8)
Answer:
-8 + - 8 + - 8 + - 8
Step-by-step explanation:
Given that:
Rungs of ladder moved per stop = 4
Number of stops made = 8
Number of ladder rungs :
Ladder rungs per stop * number of stops
- 4(descent) * 8= - 32 ladder rungs
Alternative way :
-8 in 4 places
-8 + - 8 + - 8 + - 8 = - 32