Answer:
Step-by-step explanation:
The triangle's base is the diameter and height is the radius of circle.
<u>The shaded area is:</u>
- A = πr² - 1/2bh
- A = 3.14*9.7² - 1/2(2*9.7)(9.7) = 201.4
Answer:
-9 + 7√5.
Step-by-step explanation:
(3 - √5)(2 + 3√5)
= 3(2 + 3√5) - √5(2 + 3√5))
= 6 + 9√5 - 2√5 - 15
= -9 + 7√5.
Answer:
174
Step-by-step explanation:
Answer:
≈ 6360 m³
Step-by-step explanation:
Volume of a cylinder = πr²h
radius = 12 m, h= 42.2 m
Therefore; V = 3.142 × 12² × 42.2
= 19093.3056 m²
Since the tank 1/3 full of water;
Volume = 1/3 × 19093.3056 m³
= 6364.4352 m³
≈ 6360 m³
