1/2 × panjang × tinggi..............
ANSWER

EXPLANATION
The surface area of a triangular prism is
equal to the area of two triangular faces
plus the area of the three rectangular faces.
The area of the equilateral triangle is calculated using the formula:

where s=6 is the length of one side.
and b=6 is the breadth of the rectangle and h=10 is the height of the rectangle.
Surface area


=211.2square inches.
Hey There
Correct answer: 13
Why? To find this out you need to add 4 to 9 to figure it out
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Answer:
0.16
Step-by-step explanation: