879 mm2=?dm2
79dm2=?cm2
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TP
4
HM
2
17 tháng 4 2022
a) 5,5 m2 = ........550....dm2 b) 2 tấn 347 kg = .......2347.......kg
c) 1 km 486 m = ......1486.......m d) 2 phần 5 dm2 = .....40.......cm2
TP
10
30 tháng 10 2021
Tóm tắt:
\(\rho=1,10.10^{-6}\)
\(S=1mm^2\)
\(l=2m\)
---------------------------
a) \(R=?\)
b) \(I=?\)
a) \(R=\rho\dfrac{l}{S}=1,10.10^{-6}.\dfrac{2}{1.10^{-6}}=2,2\left(\Omega\right)\)
b) \(I=\dfrac{U}{R}=\dfrac{3}{2,2}\approx1,4\left(A\right)\)
NH
2
TG
11 tháng 10 2020
3 cm2 5mm2 = ....mm2
a 35 B305 c350 d3500
câu trả lời là B 305 -_-
16 tháng 6 2023
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TT
14 tháng 2 2020
20ha=2000dam2
5cm2=500mm2
13km2=1300ha
300m2=3dam2
2100dam2=21hm2
900mm2=9cm2
38m2, 25dm2=3825dm2
15dm2 9cm2=1509cm2
10cm2 6mm2=1006mm2
879 mm2 = 0,0879 dm2
79 dm2 = 7900 cm2