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paulandigi
25.09.2019 •
Mathematics
Solve the proportion. 2/10 =11/ x. a. 55 b. 1.8 c. 2.2 d. 110
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Ответ:
Cross multiplying,
2*x = 11*10
2x = 110
x =110/2
x = 55
Ответ:
240 units²
Further explanation
Given:
1. A rectangle with length = 20 units and width = 10 units.
2. Isosceles triangle with base = 20 units and height = 4 units.
Question:
Find the total area of the shape shown below.
The Process:
Step-1: find out the area of rectangular
The area = length x width
The area = 20 x 10
Hence, the area of rectangle is 200 units².
Step-2: find out the area of isosceles triangle
The area =
The area =
The area = 10 x 4
Hence, the area of triangle is 40 units².
Step-3: find out the total area
Let us calculate the sum of the area of rectangles and triangles.
Total area = 200 units² + 40 units²
Thus, the total area of the shape shown is 240 units².
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Notes
If we want to calculate the total circumference, the length of the hypotenuse of the triangle must be determined through the Pythagorean Theorem.
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Hope I Helped