Answer:
C. 40.5 cm²
Step-by-step explanation:
Use the formula for the area of a trapezoid:
A = (1/2)(b1 +b2)h
The bases are the parallel sides, 4.5 cm and 9 cm. The height is the perpendicular distance between them, 6 cm. Filling in these numbers, we have ...
A = (1/2)(4.5 +9)(6) = 40.5 . . . cm²
First change 80% to a decimal
80% = 80/100 = 0.80
Next, multiply 35 with 0.80
35 x 0.80 = 28
Next, subtract the number gotten (28) with the regular price (35)
35 - 28 = 7
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$7 is the sales price
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hope this helps
Possible answers:
2
11
window
ii
The volume of a rectangular pyramid is
V = (1/3) A*h
where
A = the area of the rectangular base
h = the height
The two pyramids are congruent in volume.
The volume of one pyramid is
(1/3)*(2*7.5)*(6) = 11
The volume of the composite figure is 2*11 = 22
Answer: 22
