A surveyor produces a scale drawing of a triangular field. On the drawing the sides are 7.2 cm, 5.4 cm and 4.2 cm. The scale is 1:500 for linear measurements.
(a) Work out the actual perimeter of the field in metres to 3 significant figures.
(b) Hence, or otherwise, find the actual area of the field in square metres. Give your answer to 3 significant figures. (You may use Heron's formula.)
(a)Work out the actual perimeter of the field in metres to 3 significant figures.(3)
(b)Hence, or otherwise, find the actual area of the field in square metres. Give your answer to 3 significant figures.(6)
(Total for Question 8 is 9 marks)