Answer:
y/4
Step-by-step explanation:
b/c y is divided 4 so,y/4.
Answer:
x=130 degree
Step-by-step explanation:
because 50+x=180
=x=130
The formula of the area of the circle:
π × radius^2
In this case, given that the radius is 14 inches:
π × 14^2
=196π square inches
Therefore the answer is 196π square inches.
Hope it helps!
Answer:
A I think
Step-by-step explanation:
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Answer:
(a) 26.39 cm²
(b) 1.9%
Step-by-step explanation:
(a) The area formula is ...
A = πr²
so the derivative of the area is ...
A' = 2πrr'
In terms of differentials, the area error is approximately ...
ΔA = 2πr·Δr
Filling in the numbers, we have ...
ΔA = 2π(21 cm)(0.2 cm) = 8.4π cm² ≈ 26.39 cm²
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(b) The relative error is ...
e = ΔA/A = (2πr·Δr)/(πr²) = 2Δr/r = 2(.2)/21 ≈ 1.9%