Answer:
Surface area is, 478 square centimeter
Step-by-step explanation:
Surface area (S)of rectangle is given by:
[tex]S = 2(lw+wh+hl)[/tex] .....[1]
where,
l is the length
w is the width
h is the height of the rectangle respectively.
As per the statement:
A rectangular solid has sides of 7 cm, 9 cm, and 11 cm
⇒ l = 7 cm , w = 9 cm and h = 11 cm
Substitute in [1] we have;
[tex]S = 2(7 \cdot 9+9 \cdot 11+11 \cdot 7)[/tex]
⇒[tex]S = 2(63+99+77) = 2 \cdot 239 = 478 cm^2[/tex]
Therefore, the surface area is, 478 square centimeter
