Answer:
D is the correct answer
Step-by-step explanation:
Not all rectangles are squares.
Answer:
1177.5 inches
Step-by-step explanation:
Volume of a cylinder =
, where h is the height
Radius = 10/2 = 5 radius is half the diameter
Height = 3*5 = 15 height is 3 times the radius
V = 3.14 * (5^2) * (15)
= 3.14 *25 * 15
= 1177.5
Answer:
12.5cm
Step-by-step explanation:
Each side of the pentagonal garden has a length of 2.5 cm.
A pentagon has 5 sides.
Since the garden has congruent sides, all its lengths are equal.
Therefore:
Distance Walked by Tanya
= 5 X 2.5
=12.5cm
Tanya has walked 12.5cm in total.
Answer:
The area of the triangular garden is
Step-by-step explanation:
we know that
The equilateral triangle has three equal sides and three equal internal angles (the measure of each internal angle is 60 degrees)
The area of a triangle applying the law of sines is equal to
![A=\frac{1}{2}(a)(b)sin(C)](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%28a%29%28b%29sin%28C%29)
In this problem we have a equilateral triangle
therefore
![a=b=20\ ft](https://tex.z-dn.net/?f=a%3Db%3D20%5C%20ft)
![C=60\°](https://tex.z-dn.net/?f=C%3D60%5C%C2%B0)
substitute
![A=\frac{1}{2}(20)(20)sin(60\°)](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%2820%29%2820%29sin%2860%5C%C2%B0%29)
![A=\frac{1}{2}(20)(20)\frac{\sqrt{3}}{2} \\ \\A=100\sqrt{3}\ ft^{2}\\ \\A=173\ ft^{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%2820%29%2820%29%5Cfrac%7B%5Csqrt%7B3%7D%7D%7B2%7D%20%5C%5C%20%5C%5CA%3D100%5Csqrt%7B3%7D%5C%20ft%5E%7B2%7D%5C%5C%20%5C%5CA%3D173%5C%20ft%5E%7B2%7D)