The longer base of an isosceles trapezoid joins points (-3, -2) and (7, -2). One endpoint of the shorter base is (-1, 4). What a
re the coordinates of the other endpoint?
Can you explain how to figure this out please.
Can you explain how to figure this out please.
1 answer:
Answer:
(5,4)
Step-by-step explanation:
We have that the longer base of an isosceles trapezoid joins points (-3, -2) and (7, -2), and one endpoint of the shorter base is (-1, 4).
The best way to find the coordinates of the other endpoint is to draw or sketch the figure on a coordinate grid.
From the graph in the attachment the coordinates of the other endpoints is (5,4).
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The slope-intercept form:
m - slope
b - y-intercept → (0, b).
We have the points (4, 7) and (0, 7) → b = 7.
Calculate the slope:
Therefore we have
The standard form:
Answer:
90π units²
Step-by-step explanation:
(refer to attached)
Total Surface are off a right cylinder = area of its ends + area of curved surface
Given radius, r = 3 units and height, h = 12 units
Area of 2 ends,
= Area of 2 circles
= 2 x πr²
= 2π (3²)
= 2π (9)
=18π units²
Area of curved surface,
= 2πrh
= 2π(3)(12)
= 72π units²
Hence,
Surface area = 18π + 72π = 90π units²
