Question

cho hinh chu nhat  neu ta giam chieu dai 5cm va tang chieu rong 5cm ta duoc hinh vuong co canh dai la 41cm tinh chu vi hinh chu nhat do

Answer 1

Chieu dai la :

41 + 5 = 46 (cm)

Chieu rong la :

41 - 5 = 36 (cm)

Chu vi hinh chu nhat :

( 46 + 36 ) x 2 = 164 (cm)

            Dap so : 164 cm

Answer 2

chieu dai la:

41 - 5 = 36 (cm)

chieu rong la:

41 + 5 = 46 (cm)

chu vi hinh chu nhat:

(36 + 46) x 2 = 164 (cm)

Answer 3

chieu dai la

41 + 5 = 46

chieu rong la

41-6= 36

chu vi hcn la

(46 + 36 ) x 2 =164 

dap so 164