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This composite object is made of a 10-cm cube on top of a 20-cm cube.
Determine its surface area.

A-2800 cm
B-2500 cm
C-2900 cm
D-3000 cm

This composite object is made of a 10cm cube on top of a 20cm cube Determine its surface area A2800 cm B2500 cm C2900 cm D3000 cm class=

Respuesta :

the answer is A

20•20•5=2000
10•10•5=500
400-100=300

2000+500+300

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