4 years ago

A rectangular solid has sides of 7 cm + 9 cm + 11 cm what is its surface area

1 answer:

3 0

Answer:

We have yhe formula 2 · ( 7·9 + 9·11 + 7·11 ) = 2 · ( 63 + 99 + 77 ) = 2 · 239 = 478 cm^2;

Step-by-step explanation:

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