Arectangular solid has sides of 7 cm, 9 cm, and 11 cm. what is its surface area?

Surface area is, 478 square centimeter

Step-by-step explanation:

Surface area (S)of rectangle is given by:

                .....[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;

⇒

Therefore, the surface area is, 478 square centimeter

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

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step-by-step explanation: