A rectangular pool is twice as
2 answers:
Answer:
length * width = 16 yd * 8 yd
or
length = 16 yd
width = 8 yd
Step-by-step explanation:
take the rectangular pool to have sides a (length) and 2a (width).
we are told that the length is as twice as its width, therefore,
Perimeter is given by (a + 2a) × 2 = 48 yd
Divide both sides by 2 ⇒ ⇒ a + 2a = 24 yd
⇒3a = 24 yd
Divide both sides by 3 ⇒ ⇒ a = 8 yd
therefore, the width of the pool is 8 yd and its length is 16 yd (Twice as long as it is wide)
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Answer:
Area = 21/2 = 10.5 area units
Step-by-step explanation:
Two of the points are on the same line (the y-axis) as they both have x-coordinates of 0. This can thus be the base of your triangle.
Two more are on the same line (y= -9) as they both have the same y-coordinate of -9. This can be the height of your triangle.
So you have a base which is between -2 and -9 (7 units) and a height which is between 0 and 3 (3 units) so now just use the equation for area of a triangle