Question 4 - A-Level Maths

Exam Board	OCR MEI
Module	C2 (Core Mathematics 2)
Year	2010
Session	January
Topic	Radians, Arc Length and Sector Area

4 A sector of a circle has area \(8.45 \mathrm {~cm} ^ { 2 }\) and sector angle 0.4 radians. Calculate the radius of the sector.