Answer:
190 cm²
Step-by-step explanation:
((12 + 26) ÷ 2) × 10
38 ÷ 2
19
19 × 10
190 cm²
For this Q:
mean=31
st.dev.=0.8
x=32
Calculate z-score:
z=(x-m)/s = (32-31)/0.8=1.25
This z-score value corresponding to the probability of 0.8944
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Answer:
0.54kilometres
Step-by-step explanation:
a)actual distance =2.7*20000
=54000cm
=0.54kilometres