Answer:
y is the same as 1y. so 9y + 1y = 10y
Divide each side of the equation by 0.3 .
When added correctly, you will come to the answer of 959,959.
hope this helped, dont forget to mark this answer as the brainliest!!!!
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.