The diagram shows a field in the shape of a trapezium with parallel sides of 15 m and 25 m. The area of the field is 200 m2 and the perpendicular width is h mh\text{ m}h m.

Find the value of hhh.
Practise OCR GCSE Maths Area and Perimeter with exam-style questions for Foundation and Higher tier. 48 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.