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2 years ago

8

if you work a hundred square feet per hour and had 630 feet of walls to be painted and 612 feet of ceiling to paint how many hou

rs would you be working

1 answer:

erastovalidia [21]2 years ago

5 0

630 square feet of walls + 612 square feet of ceiling = 1242 square feet
1242/100=12.42 hours

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3 years ago

Trapezoid ABCD has an area of 525 cm squared. If height AB = 21 cm and BC = 37 cm, what is the measure of AD?

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Answer:

AD = 13

Step-by-step explanation:

Area of trapezoid ABCD

$= \frac{1}{2} (AB + AD) \times AB \\ \\ 525= \frac{1}{2} (37+ AD) \times21\\ \\ 525 \times 2= (37+ AD) \times21 \\ \\ 1050 = 21 \times 37 + 21AD \\ \\ 1050 = 777+ 21AD \\ \\ 21AD = 1050 - 777 \\ \\ 21AD = 273 \\ \\ AD = \frac{273}{21} \\ \\ AD = 13$

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