Welcome :: Homework Help and Answers :: Mathskey.com

Q&A
Unanswered
Categories
Users
Ask a Question

Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Q&A Categories
BASIC MATH (93)
PRE-ALGEBRA (441)
ALGEBRA 1 (2,220)
GEOMETRY (864)
ALGEBRA 2 (2,751)
TRIGONOMETRY (1,187)
PRECALCULUS (1,903)
CALCULUS (2,802)
STATISTICS (129)
PHYSICS (659)
CHEMISTRY (137)
MECHANICAL ENGINEERING (64)
ELECTRICAL ENGINEERING (207)
Winplot Tutorials (2)

Most popular tags

solving-equations system-of-equations functions math slope-intercept-form physics homework-help trigonometric-identities integration limits substitution-method calculus

13,459 questions

17,854 answers

1,446 comments

805,771 users

Find the area of a circle with radius r = 4 cm.

0 votes

Find the area of a circle with radius r = 4 cm. (Use 3.14 for .)

area-of-a-circle

asked Nov 16, 2013 in GEOMETRY by angel12 Scholar

Share this question

Google+ Facebook Twitter LinkedIn Reddit

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 votes

Area of circle = pi*r^2

r = 4cm, pi = 3.14

Substitute the r, pi values in formula

A = 3.14*4*4

= 50.24cm^2

answered Nov 18, 2013 by william Mentor

Please log in or register to add a comment.

Related questions

area of regular hexagon inscribed in a circle of radius 6 cm

asked Dec 9, 2013 in GEOMETRY by chrisgirl Apprentice

area-of-a-hexagon
area-of-a-circle

The area of a circle is 20 pie. Find the radius in simplest form?

asked Mar 18, 2014 in GEOMETRY by johnkelly Apprentice

area-of-a-circle
radius-of-a-circle

If the circumference of a circle if 188.4cm what is the area, radius, diameter?

asked Dec 9, 2013 in GEOMETRY by mathgirl Apprentice

diameter-of-a-circle
area-of-a-circle
radius-of-a-circle

if the radius of a circle is 7 whats the area?

asked Nov 16, 2013 in GEOMETRY by payton Apprentice

area-of-a-circle

Find the area and the circumference of a circle with diameter 2m .

asked Dec 9, 2013 in GEOMETRY by payton Apprentice

area-of-a-circle
diameter-of-a-circle
circumference-of-a-circle

area of circle with diameter of 4 in

asked Dec 9, 2013 in GEOMETRY by rockstar Apprentice

area-of-a-circle

If a (2 -1) and b (4 7) are the endpoints of a diameter of a circle what is the area on the circle?

asked May 3, 2014 in GEOMETRY by anonymous

area-of-a-circle

Find the area of a circle whose circumference is 18pi diameter.

asked Mar 18, 2014 in GEOMETRY by dkinz Apprentice

area-of-a-circle
circumference-of-a-circle
diameter-of-a-circle

what is the area of the circle, with an ratio of 12

asked Dec 9, 2013 in GEOMETRY by johnkelly Apprentice

area-of-a-circle

a circle has a diameter of 14 ft. if the area is tripled what happens to the circumference

asked Mar 3, 2014 in GEOMETRY by linda Scholar

diameter-of-a-circle
circumference-of-a-circle
area-of-a-circle

What is the area of a 10cm circle?

asked Nov 16, 2013 in GEOMETRY by dkinz Apprentice

area-of-a-circle

a circle diameter is 48 centimeters .what is the amount of centimeters inside the circle?

asked Mar 1, 2014 in GEOMETRY by harvy0496 Apprentice

diameter-of-a-circle
area-of-a-circle

Find the surface area of a ball with 30 cm. radius

asked Mar 4, 2014 in GEOMETRY by johnkelly Apprentice

surface-area
radius

the of two circles are 6cm and 12cm.find the ratio of the largerarea to the smaller area

asked Dec 2, 2013 in GEOMETRY by futai Scholar

area-of-a-circle
ratio-and-proportion

In a circle with radius of 16, find the area of a sector whose central is 152

asked Feb 21, 2014 in GEOMETRY by linda Scholar

area-of-a-sector

Finding an equation for a circle

asked Mar 1, 2014 in GEOMETRY by homeworkhelp Mentor

diameter-of-a-circle
area-of-a-circle

A denotes the area of the sector of a circle of radius r formed by the central angle. Find the missing quantity.

asked Jan 24, 2015 in PRECALCULUS by anonymous

area-of-the-sector

The area of a sector of a circle with a radius of 4 centimeters is 2.512 square centimeters.

asked Sep 10, 2014 in ALGEBRA 2 by anonymous

area-of-a-sector

Given a circle with a radius of 4, what is the circumference in pi?

asked Feb 21, 2014 in GEOMETRY by harvy0496 Apprentice

circumference-of-a-circle

how to draw a 72 deg. sector in a given circle of radius 3.7 cm.?

asked Mar 4, 2014 in GEOMETRY by linda Scholar

sector-of-a-circle
circle-of-radius

Copyright © 2024 MATHSKEY. All Rights Reserved. Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ

...