Question

Help math Composite figures and there area please help number the questions please

Answer 1

D is the first one

Step-by-step explanation:

Answer 2

1 of 5) D, 2 of 5) B, 3 of 5) D, 4 of 5) A, 5 of 5) D

Step-by-step explanation:

1 of 5) The composite area is the sum of the areas of two rectangles. That is:

`A = (4\,cm)\cdot (3\,cm) + (6\,cm)\cdot (2\,cm)`

`A = 12\,cm^(2)+12\,cm^(2)`

`A = 24\,cm^(2)`

The area of the shaded region is 24 square centimeters. (Answer: D)

2 of 5) The composite area is the sum of the areas of the rectangle and the triangle. That is:

`A = (8\,cm)\cdot (5\,cm)+(1)/(2)\cdot (5\,cm)\cdot (5\,cm)`

`A = 40\,cm^(2) + 12.5\,cm^(2)`

`A = 52.5\,cm^(2)`

The area of the shaded region is 52.5 square centimeters. (Answer: B)

3 of 5) The composite area is the sum of the areas of the rectangle and the triangle. That is:

`A = (10\,cm)\cdot (4\,cm)+ (1)/(2)\cdot (7\,cm)\cdot (6\,cm)`

`A = 40\,cm^(2)+21\,cm^(2)`

`A = 61\,cm^(2)`

The area of the shaded region is 61 square centimeters. (Answer: D)

4 of 5) The composite area is the sum of the areas of four triangles and two rectangles. That is:

`A = 4\cdot (1)/(2)\cdot (1\,m)\cdot (2\,m) + (8\,m)\cdot (4\,m)+(3\m)\cdot (1\,m)`

`A = 4\,m^(2)+32\,m^(2)+3\,m^(2)`

`A = 39\,m^(2)`

The area of the shaded region is 39 square meters. (Answers: A)

5 of 5) The composite area is the sum of the areas of the three semicircles and the square. That is:

`A =3\cdot (\pi)/(8)\cdot (10\,cm)^(2)+ (10\,cm)^(2)`

`A = 117.810\,cm^(2)+100\,cm^(2)`

`A = 217.810\,cm^(2)`

The area of the shaded region is 217.810 square centimeters. (Answer: D)