Answer:
a
Step-by-step explanation:
Answer: Hope this helps!
Step-by-step explanation:
Area of a trapezoid formula base a+base b/2*h
Base a is the top length (22.5)
Base b is the bottom length (49.9)
Add those two lengths together (22.5+49.9=72.4)
Divide that by two (72.4/2=36.2)
Then multiply that by the height (36.2*23.8=861.56)
So your area is 861.56
Answer:
5,650
Step-by-step explanation:
The line DB is 8cm which is made up of DE and EB which are equal to each other, thus DE and DB are both 4 cm.
Secondly, since AC and DB are perpendicular, that means angle DEC and angle DEA are ninety degrees.
Thus using the Pythagorean theorem, we can find the length of AE and EC which we can add up to find the length of AC.
![AE = \sqrt{AD^2-DE^2} =\sqrt{5^2-4^2} =\sqrt{25-16} =\sqrt{9}=3\\ \\EC=\sqrt{DC^2-DE^2}=\sqrt{6^2-4^2}=\sqrt{36-16} =\sqrt{20} =2\sqrt{5} =4.47](https://tex.z-dn.net/?f=AE%20%3D%20%5Csqrt%7BAD%5E2-DE%5E2%7D%20%3D%5Csqrt%7B5%5E2-4%5E2%7D%20%3D%5Csqrt%7B25-16%7D%20%3D%5Csqrt%7B9%7D%3D3%5C%5C%20%5C%5CEC%3D%5Csqrt%7BDC%5E2-DE%5E2%7D%3D%5Csqrt%7B6%5E2-4%5E2%7D%3D%5Csqrt%7B36-16%7D%20%20%20%3D%5Csqrt%7B20%7D%20%3D2%5Csqrt%7B5%7D%20%3D4.47)
By adding AE and EC, we get that the length of AE and EC is 7.47 or as approximated to the nearest tenth 7.5.
Hope that helps!