Imagine a sector of a circle called AOB. With center O and radius rcm. The angle AOB is R in radians. The area of the sector is 11cm². Given the perimeter of the sector is 4 time the length of the arc AB. Find r.

Loading

11 = 1/2 r²RAB = x = rRr + r + x = 4x2r = 3rRR = 2/3r²R = 22r² = 33r = √33

Answered by Alice S. • Maths tutor

153 Views

Answered by Alice S.
Maths tutor

153 Views

Need help with Maths?

One to one online tution can be a great way to brush up on your Maths knowledge.

Have a Free Meeting with one of our hand picked tutors from the UK’s top universities

Answered by Jasmin H.

Answered by James B.

Answered by

Answered by Ajay D.

One to one online tution can be a great way to brush up on your Maths knowledge.

Have a Free Meeting with one of our hand picked tutors from the UK’s top universities