Answer:
Step-by-step explanation: The formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height.
The shape is a trapezoid and its area formula is:
A =

h
a is a base length, b is another base length and h is the height.
A =

(10.8)
A = 81
So the area of the shape is 81yd²
Answer: Final price of the coffee table is $98.9.
Step-by-step explanation:
Original price of a coffee table = $115
Discount on a coffee table = 20%
So, After discount, it becomes,

Rate of sales tax = 7.5%
So, after tax the price becomes,

Hence, final price of the coffee table is $98.9.
All in the tenths place after the decimal.