Answer:
If you can tell me what the questions are, i may be able to help
Step-by-step explanation:
It is 4 because the diameter is twice longer than the radius!
Is there a picture???????
Answer:
Step-by-step explanation:
The graph shows the profile of your parabolic listening device,
First taking small triangle,
Perpendicular(P') = 5cm
Base(B) = y (let)
Hypotenuse(H') = 12cm
so,
(H')² = (P')² + (B)²
(12)² = (5)² + (y)²
(y)² = 144 - 25
(y)² = 119
Now taking big triangle,
Perpendicular (P) = 12+5 = 17cm
Base (B) = y (already supposed)
Hypotenuse (H) = x
so,
(H)² = (P)² + (B)²
(x)² = (17)² + (y)²
(x)² = 289 + 119 = 408
x = √408
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Hope it helps...</h2>