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baisydravoo
18.02.2021 •
Mathematics
Find the Perimeter and Area
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Ответ:
Area = 20.28 cm^2
Perimeter = 16.28 cm
Step-by-step explanation:
The figure is composed of a half circle and a rectangle,
The circle has a diameter of 7 - 2 - 1 = 4cm and the rectangle is of side 2 cm and 7 cm.
Therefore the area is :
Area = A rectangle + Acircle/2 = 2*7 + pi*r^2/2 = 20.28 cm^2
The perimeter is :
Perimiter = 1 + 2 + 7 + Pcircle/2 = 1 + 2 + 7 + 2*pi*r/2 = 16.28 cm
Ответ:
1.![\sqrt{218}](/tpl/images/1410/7359/b5b43.png)
2.![\sqrt{89}](/tpl/images/1410/7359/3e050.png)
3.![2\sqrt{17}](/tpl/images/1410/7359/5b8f5.png)
Step-by-step explanation:
The formula to find the distance between any two points on a coordinate plane is as follows:
Where (
) and (
) are the two points one is trying to find the distance between. Substitute the points in and solve for the distance between them for each respective problem.
1.
Points:![(-4, 6),\ \ (3, -7)](/tpl/images/1410/7359/3a519.png)
Substitute into the formula,
Simplify,
2.
Points:![(-6, -5)\ \ (2,0)](/tpl/images/1410/7359/0c102.png)
Substitute into the formula,
Simplify,
3.
Points:![(-1, 4)\ \ (1,-4)](/tpl/images/1410/7359/6de57.png)
Substitute into the formula,
Simplify,