Given a spinner divided in 3 sections numbered 1, 2 and 3, and that the arc of section 2 is double that of section one (~57.6 cm), calculate pi to 2 decimal places. The radius of the spinner is 30cm and the angle sub-intended by section 3 is 30 degrees.

Use angle of section 3 to get ratios of arcs:Realise either one of the arcs 1 or 2 will do.Calculate 360-30 / 3 to get 110 degrees for section 1.Calculate ratio of arcs for section 1: 11/36
Find pi:Multiply arc1 length by 36/11 to get total perimeter.Divide by diameter: 2x30cmGet 3.141818... > 3.14

FC
Answered by Filipe C. Maths tutor

2412 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Rearrange v = u + at to make t the subject of the formula


Solve the Simultaneous equations x^2 + y^2 =29, y-x=3.


Solve the simultaneous equation: 3x+2y=8 and 2x+5y=-2


The numbers a,b,c and d satisfy the equations: a+2b+3c+4d=k and 4a=3b=2c=d. What is the smallest value of k for which a,b,c and d are positive integers?


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