karleee33
Answered

Westonci.ca makes finding answers easy, with a community of experts ready to provide you with the information you seek. Experience the convenience of getting accurate answers to your questions from a dedicated community of professionals. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

what's the circumference?

Whats The Circumference class=

Sagot :

Answer:

D

Step-by-step explanation:

The circumference (C) of a circle is calculated as

• C = πd ( d is the diameter )

From the diagram

the diameter (d) is the hypotenuse of the given right triangle

Using Pythagoras' identity in the right triangle

• c² = a² + b² ( c is the hypotenuse and a, b the legs )

let a = 20, b = 21 and c = d ( the diameter ) , then

d² = 20² + 21² = 400 + 441 = 841 ( take square root of both sides )

[tex]\sqrt{d^2}[/tex] = [tex]\sqrt{841}[/tex]

d = 29

Then

C = πd = 29π

Thank you for your visit. We are dedicated to helping you find the information you need, whenever you need it. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.