shelliecurby
05.05.2020 •
Mathematics
What is the area of trapezoid defg with coordinates d (2, 3), e (4, 3), f (6, 1), and g (2, 1)?
12 square units
8 square units
6 square units
3 square units
Solved
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Ответ:
Step-by-step explanation
Area of a trapezium is given as
A = ½ (a + b)h
From the attachment we can find a by using co-ordinate geometry
The distance between point "d" and "e" is the required distance "a"
So,
Point 1 = d = (x1,y1) = (2,3)
Point 2 = e = (x2,y2) = (4,3)
distance = √(x2-x1)²+(y2-y1)²
a = √(4-2)²+(3-3)²
a = √2²+0² = √4+0 = √4
a = 2
Also, from the attachment to get "b"
Using the same approach
The distance between point "g" and "f" is the required distance "b"
So,
Point 1 = g = (x1,y1) = (2,1)
Point 2 = f = (x2,y2) = (6,1)
distance = √(x2-x1)²+(y2-y1)²
b = √(6-2)²+(1-1)²
b = √4²+0² = √16+0 = √16
b = 4
Also, to get the height h, we use same approach
The distance between point "d" and "g" is the required distance "h"
So,
Point 1 = d = (x1,y1) = (2,3)
Point 2 = g = (x2,y2) = (2,1)
distance = √(x2-x1)²+(y2-y1)²
h = √(2-2)²+(3-1)²
h = √0²+2² = √0+4 = √4
h = 2
Then, we have the parameters for the area of the trapezium
a = 2, b = 4 and h = 2
Then,
Area = ½ (a+b)•h
Area = ½ × (2+4) × 2
Area = ½ × 6 × 2
Area = 6 Square units
The area of the trapezium is 6 Square units
Ответ:
2(4)-6<3
8-6<3
2<3