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3 years ago

9

Find the surface area of the pyramid.

1 answer:

ankoles [38]3 years ago

4 0

Answer:

129.6

Step-by-step explanation:

A= 1/2 bh

=7.8 x 9 x 1/2

= 35.1

A= 1/2 bh

=7x 9 x 1/2

= 31.5

31.5 x 3

= 94.5

<u>Add</u>

<u>35.1 + 94.5 = 129.6</u>

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