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\(\frac{2}{8}km^23m^2=0,25km^23m^2=2500030000cm^2\)
\(\frac{2}{5}m^232dm^2=0,4m^232dm^2=7200cm^2\)
\(\frac{3}{8}km^224m^2=0,375km^224m^2=3750240000cm^2\)
\(\frac{2}{4}m^2321dm^2=0,5m^2321dm^2=37100cm^2\)
CHÚC BN HỌC TỐT!!!!!
\(9km^215m^2=9000015m^2\)
\(6km^29m^2=6000009m^2\)
\(8540396m^2=8km^2540396m^2\)
\(5m^214cm^2=50014cm^2\)
\(5dm^223cm^2=523cm^2\)
\(1m^217cm^2=10017cm^2\)
\(6300dm^2=630000cm^2\)
\(78000dm^2=780m^2\)
\(7km^2=7000000m^2\)
\(20km^2=20000000m^2\)
\(50000000m^2=50km^2\)
1 km = 1 000 000 m2 5 000 000 m2 = 5 km2
6 m2 4 dm2 = 604 dm2 21 500 cm2 = 215 dm2
3 km2 40 m2 = 3 000 040 m2 3402 cm2 = 34 dm2 2 cm2
12 m2 4 dm2 = 1204 dm2 10 235 dm2 = 102 m2 35 dm2
HT nha + :))) + ~~~
22m24dm2=..2224.. dm2
3m2 410cm2=...30410. cm2
3428dm2=.34... m2 .28.. dm2
4000109m2=..4.... km2 .109.... m2
19m2 60 cm2=...190060. cm2
62m2 9cm2=...620009.. cm2
22m24dm2=..2224.. dm2
3m2 410cm2=..30410.. cm2
3428dm2=..34.. m2 ..28.. dm2
4000109m2=..4.... km2 .109.... m2
19m2 60 cm2=..190060.. cm2
62m2 9cm2=..620009... cm2
115 dm2 = 11500 cm2 5 tạ 32 yến= 820 kg
34 dm2 12cm2= 3412 cm2 8 m2 200 cm2= 802 dm2
5 m2 28m2= 330000 cm2 6 km2 62m2= 60000620000cm2
Chiều dài hình chữ nhật là:(45+5):2=25(cm)
Chiều rộng hình chữ nhật là:25-5=20(cm)
Diện tích hình chữ nhật là:25*20=500(cm2)
Đáp số:......................................
21dm2=2100cm2
7dm215cm2=715cm2
37000cm2=370dm2
3km2=300000000cm2
hok tốt
999999999,9999999999km2 k cho minh nha
đảm bảo đúng 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000% lun
9999999999999999999999999999999999999999999999999999999999999999999999999999999 nha đúng 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%