Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Get the answers you need quickly and accurately from a dedicated community of experts on our Q&A platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.
Sagot :
Answer:
Below in bold
Step.-by-step explanation:
It consists of 5 isosceles triangles of equal sides 4 cm and vertex angles 360 / 5
= 72 degrees.
Area of 1 triangle = 1/2 * 4^2 *sin 72
Area of the whole pentagon = 5 * 1/2 *4^2 * sin 72
= 38.04 cm^2.
As the radius of the pentagon is given we can use the followinhg formula
A = [tex]\frac{5}{2}[/tex] r² (sin72°) where r is the radius.
What is a polygon ?
Polygons are 2D shapes formed by 3 or more than three lines closed means all lines connect up.There are two types of polygons reguler polygons and irreguler polygons.Here poly means many and gons means angles so it is formed by many lines closed and forming angles where each line connects.
In the given question radius is given 4cm so we will put the value of the radius in our formula A = [tex]\frac{5}{2}[/tex] r² (sin72°) = A = [tex]\frac{5}{2}[/tex] (4)² (sin72°) =34.04sq cms.
Learn more about Polygons here:
https://brainly.com/question/10441863
#SPJ2
We appreciate your time. Please revisit us for more reliable answers to any questions you may have. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Westonci.ca is here to provide the answers you seek. Return often for more expert solutions.
