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4 votes
Please help me ASAP!!!

Please help me ASAP!!!-example-1

2 Answers

6 votes

Explanation:

SA of a pyramid

=L(2h+L)

=3(2(3)+3)

=3(9)

=27cm^2

User Rempsyc
by
5.0k points
2 votes

Answer:

27 cm²

Explanation:

The surface area is the area of the square plus the area of the 4 congruent triangles.

area of square = 3² = 9 cm²

area of 1 triangle =
(1)/(2) × 3 × 3 = 4.5 cm²

area of 4 triangles = 4 × 4.5 = 18 cm²

Total surface area = 9 + 18 = 27 cm²

User Shourob Datta
by
5.6k points