Look at the picture.
ΔABD and ΔBCD are similar, therefore:

Use Pythagorean theorem:
Answer:
162 ft^2
Step-by-step explanation:
18 * 18 = 324
324/2 = 162
The area of the patio is 162 square feet
-1/3(x - 15) = -4
step 1 : multiply both sides by -3, step 2 : add 15 to both sides
because when u multiply both sides by -3, this cancels out the -1/3 on the left side leaving u with : x - 15 = -4 * -3.....x - 15 = 12.....and then u would add 15 to both sides....giving u : x = 12 + 15.....x = 27
Answer:
Q1:9
Step-by-step explanation:
Since the area of a triangle is basexheight divided by 2, than (12 x __)/2 = 54
Answer:

Step-by-step explanation:










Hope I helped!
Best regards! :D
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