What's is a domain, in regards to math?

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