Area of a Geometric Flower: Solving with Variables 2x, 1.2x, and 1.5x
Question
What is the area of the flower represented in the diagram?
Video Solution
Solution Steps
00:00Find the area of the flower
00:03The area of the flower equals the sum of the circles' areas
00:12We'll use the formula for calculating circle area
00:24We'll substitute this formula in the flower's area
00:43Now we'll substitute appropriate values according to the given data and calculate to find the area
01:03We'll solve the multiplications
01:15We'll group the factors
01:18And this is the solution to the question
Step-by-Step Solution
To solve this problem, we'll calculate the areas of the different circles and then add them accordingly. This approach requires determining each circle's area as follows:
Identify the radii of the circles given as 2x, 1.5x, 1.2x, constants like 3, and 2.
Use the circle area formula A=πr2 to calculate each circle's area.
Add all these areas to determine the total area of the flower shape.
Let's begin:
First Circle: Radius =2x
Area =π(2x)2=4x2π
Second Circle: Radius =1.5x
Area =π(1.5x)2=2.25x2π
Third Circle: Radius =1.2x
Area =π(1.2x)2=1.44x2π
Fourth Circle: Radius =3
Area =π(3)2=9π
Fifth Circle: Radius =2
Area =π(2)2=4π
Now, summing the areas in terms of π, we find:
Total Area =4x2π+2.25x2π+1.44x2π+9π+4π
Combine like terms:
Total Area =(4+2.25+1.44)x2π+(9+4)π
Total Area =7.69x2π+13π
Therefore, the area of the flower depicted in the diagram is 7.69x2π+13π.