MYTUTOR SUBJECT ANSWERS

421 views

How do I find the area of a circle C with diameter 14cm?

The formula for the area of a circle is π r2. To use this formula we first need to find r, the radius of the circle. The radius is the distance from the centre of the circle to the edge, and is equal to half of the diameter. The radius of this circle is half of 14, or 14/2 = 7. Now we can use the formula for area.  π x 7= π x 49 = 153.938..... or 159.3 to 1 decimal place. It is important not to forget units with your final answer if they are given in the question, so the area of our circle C = 159.3 cm2.

Tamsyn H. GCSE Maths tutor, 11 Plus Maths tutor, 13 Plus  Maths tutor

10 months ago

Answered by Tamsyn, a 13 Plus Maths tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

326 SUBJECT SPECIALISTS

£22 /hr

Raquel L.

Degree: Physics with Theoretical Physics (Masters) - Kings, London University

Subjects offered:Maths, Spanish+ 1 more

Maths
Spanish
Physics

“I am a Physics with Theoretical Physics student at King´s College London. And if there is something that I love even more than Physics and Science is learning. I love it so much that I decided to leave my country, leaving there my fam...”

PremiumTimothy N. A Level Design & Technology tutor, GCSE Design & Technolog...
£36 /hr

Timothy N.

Degree: Architecture and Environmental Engineering (Masters) - Nottingham University

Subjects offered:Maths, Physics+ 2 more

Maths
Physics
Design & Technology
-Personal Statements-

“Hi there, I have a passion for helping students achieve, and believe that with my 200+ hours of experience, we will be able to surpass the grades you want!”

£24 /hr

Michelangelo M.

Degree: MMath Mathematics with Placement (Masters) - Bath University

Subjects offered:Maths, Italian+ 4 more

Maths
Italian
Further Mathematics
Computing
.STEP.
.MAT.

“Mathematics student at the University of Bath, willing to help you love this subject and improve your grades.”

About the author

£18 /hr

Tamsyn H.

Degree: Mathematics (Bachelors) - Cardiff University

Subjects offered:Maths

Maths

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

You may also like...

Other 13 Plus Maths questions

Solve the following simultaneous equation: 3x+2y=20 and x+4y=20

The following sequence reads: 8, 5, 2, -1. What are the 4th and 50th terms of this sequence?

Write 0.185 as a percentage

Bob draws the largest circle he can on a 20cm piece of paper. He then cuts out the circle and looks as the cuttings that are left. What is the total area of the cuttings to the nearest cm?

View 13 Plus Maths tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok