Answer:
a . 9.66 cm
Step-by-step explanation:
a. rule MDAS
multiple first
4(1)=4
4(√2)=5.66
(4+5.66)=9.66cm
I think I know what you're asking. You know that 4+4=8 so you can just subtract 1 from that to get 7.
Round to the what? Tenths? Hundredths? Thousandths?
Tenths: 270735. 8
Hundredths: 270736.84
Thousandths: 270735.836