In order to find the Area of a rectangle you need to just multiply the length by the width. Don't be confused due to the squared symbol.
For the original garden the area was 130m^2
For the new rectangle we will need to work backwards, so therefore, when the rectangles area is 208m^2, sides will have to be both 8 and 26
Answer:
y = 31
Step-by-step explanation:
We'll, if x + y = 10,
and x = -21,
then: -21 + y = 10.
To solve, add 21 on both sides to get y = 31
Hope this helps :)
Answer:
The Answer is A) X=6+3/10
Step-by-step explanation:
x
=
6
+
3
√
10
, 6
−
3
√
10
Decimal Form:
x = 15.48683298
, −
3.48683298
To start, the question is asking for surface area of a cylinder, meaning you will have to use this formula to find it: A=2πrh+2πr^2.
Since you already know that the diameter of the plastic cylinder is 4 marbles long, and each marble is 2 cm in diameter, you would multiply 4 and 2 to get that your diameter is 8 cm. However, since the surface area of a cylinder formula uses radius, you would simply divide 8 by 2 to get that the radius of the cylinder is 4 cm.
Now, since you already know that the height of the cylinder is equal to 10 marbles, multiply the amount of marbles by 2 to get that the height of the cylinder is 20 cm.
Now that you know the height and the diameter of the cylinder, plug the values into the formula: A=2π(4)(20)+2π(4)^2.
Assuming that pi is 3.14, simplify the equation as according to PEMDAS and you get that the area of plastic needed to make one cylinder is 602.88 cm squared
