Answer:
a. 70°
Step-by-step explanation:
m∠BDC + m∠CDA = m∠BDA
-3x + 34 - 2x + 56 = 150
-5x + 90 = 150
-5x = 60
x = -12
m∠BDC = -3x + 34 = -3(-12) + 34
= 36 + 34 = 70°
Answer:
b = 45 / 4 = 11 1 /4.
Step-by-step explanation:
We are dealing with a (30,60,90)-triangle, therefore z = 15 sqrt(3) / 2. So as well b = (15 sqrt(3) / 2) sqrt(3) / 2 = 45 / 4.
Answer:
about 21.8628330588
Step-by-step explanation:
keep in mind that area of a semicircle is
and that in this example the
side = diameter = 2r.

hope this helps :)
300.6 because if you multiply 0.10 and 6 you will get .6 then if you multiply 50 times 6 you will get 300 and then add both together then get your answer