PLEASE HELP! I WILL MARK YOU AS BRAINLIEST!
1 answer:
Answer:
33%
Step-by-step explanation:
This question involves working with areas.
The area of a circle is πr².
With this in mind, let's proceed to label our circles.
From order of smallest to largest, we'll label them A, B and C.
Area for circle A = π(4)² = 16π
Area for circle B = π(4+3)² = π7² = 49π
Area for circle C = π(4+3+3)² = π10² = 100π
Now let's label the rings.
The blue shaded area will be ring K and the outer, larger, ring, L.
To find the area of ring L, we must subtract the area of B from C.
L = C - B
L = 100π - 49π
L = 51π
Now to find the area of ring K, we'll subtract the area of our circle A, and our ring L.
K = C - A - L
K = 100π - 16π - 51π
K = 33π
We now know that the blue shaded area has a total area of 33π. We also know that the full area of the logo is the same area of Circle C, 100π. To find the percentage, we simply divide.
Percentage of K =
Percentage of K =
Percentage of K =
Percentage of K = 33%
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The three numbers will be 12, 7, 2 and 3, 7, 11.
<h3>What is a sequence?</h3>A sequence is a list of elements that have been ordered in a sequential manner, such that members come either before or after.
Let the three consecutive numbers be a, a + d, and a + 2d
The sum of three numbers which are consecutive terms of an A.P. is 21.
a + a + d + a + 2d = 21
3(a + d) = 21
a = 7 - d
If the second number is reduced by 1 and the third term is increased by 1 we obtain the geometric product.
Then the number will be a, a + d − 1, a + 2d + 1. Then we have
On simplifying, we have
36 = a (8 + d)
a² - 15a + 36 = 0
On factorizing, the value of a will be
a² - 15a + 36 = 0
a² - 12a - 3a + 36 = 0
(a - 12)(a - 3) = 0
a = 3, 12
If a = 12, then the value of d will be
d = 7 - 12
d = -5
If a = 3, then the value of d will be
d = 7 - 3
d = 4
Then the three numbers will be 12, 7, 2 and 3, 7, 11.
More about the sequence link is given below.
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