A triangular plot of land has vertices PPP, QQQ, and RRR. The distance from P P\,P to Q Q\,Q is 42 cm and the distance from P P\,P to R R\,R is 35 cm. The area of the plot is 600 cm2.
Calculate the perimeter of the triangle PQRPQRPQR.
Give your answer to 3 significant figures.
Practise AQA GCSE Maths The Cosine Rule with exam-style questions for Foundation and Higher tier. 44 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.