A circular table has a diameter 140 cm. Calculate the area of the table in cm^2, leaving your answer as a multiple of pi.

The equation for a circle is pi x radius x radius. So,first we need to find the radius which is half the diameter, 140 divided by 2 equals 70 cm. As the question asks for the answer as a multiple of pi there is no need to multiply by pi. So the answer is simple 70 x 70 which without a calculator it would be easier to do 7 x 7 which is 49 and then add the two zeros on at the end, giving 4900. Therefore the answer would be 4900pi cm^2.

Answered by Fraser S. Maths tutor

6645 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do i factorise 20 + 10x?


Solve for x, 15x+8 = 53


What is the photoelectric effect? (A-Level Physics)


What is the distance between the points with co-ordinates (3,2) and (7,9)?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences