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Answer:
Length = 24 meters.
Width = 8 meters.
Step-by-step explanation:
Recall that to find the area of a rectangle, the formula is as shown:
A = l × w
In this case, the length is 3 times the length of the width, or 3 : 1.
Let w = width, and
3w = length.
Find the value of w by plugging in these values into the equation:
192 = 3w · w
192 = 3w²
Divide both sides by 3:
64 = w²
Square root both sides:
w = 8 meters. This is the width.
The length is equivalent to 3w, so:
3(8) = 24 meters.
Answer:
-15.4
Step-by-step explanation:
4(2(-2)) + 3(3) - 2(4.2)
Multiply the numbers in the parentheses first because of PEMDAS.
4(-4) + 9 - 8.4
-16 + 9 - 8.4
Now add the numbers together.
-15.4
Answer:
490 pi units^3
Step-by-step explanation:
The volume of a cylinder is given by
V = pi r^2 h
The diameter is 14 so the radius is 14/2 = 7
V = pi (7)^2 * 10
V =490 pi
Answer:
volume = 31.5w
Step-by-step explanation:
A rectangular prism is a 3 dimensional figure that have 6 faces that are rectangular in shape. To ascertain the volume of a rectangular prism you need to know the length, width and height. The formula for the volume of a rectangular prism is represented below .
volume of a rectangular prism = LHW
where
L= length
H = height
W = width
volume = LHW
L = 7.5 ft
W = w ft
H = 4.2 ft
The expression for the volume of a rectangular prism with the following value above can be represented below.
volume = 4.2 × 7.5 × w
volume = 31.5w
