Answer:
d
Step-by-step explanation:
Answer:
65 degrees
Step-by-step explanation:
y is a right angle and a is 30 degrees. this means that the supplementary engle of x is 45 plus 70 which is 115. 180-115 = 65 degrees.
The surface area of a right circular cone is SA =<span>

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The diameter (d) is equal to 20 meters and half of it is equal to the radius which is 10 meters.
The height (h) of the tank is equal to 42 meters.
Substituting the given to the equation:
SA =

= 1670.51 square meters or the closest answer is 1,671 m2
You should model it if you know the thingy to the answer then multiply the dividend to get the multiplcation using the essenials standard algarithm for properties of equality.
Answer:
could you please provide a picture of the angles
Step-by-step explanation: