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 February 25th, 2019, 06:03 AM #1 Newbie   Joined: Feb 2019 From: uk Posts: 2 Thanks: 0 GCSE maths homework help Please help me solve these questions, thanks. Links to question: https://ibb.co/BsLs4WL https://ibb.co/SrJQLL2 Last edited by skipjack; February 25th, 2019 at 06:42 AM.
 February 25th, 2019, 06:45 AM #2 Global Moderator   Joined: Dec 2006 Posts: 21,036 Thanks: 2273 The diagram already divides the roof into two parts. I'll assume that the left part is a trapezium and the right part is a rectangle. Area(trapezium) = base × average height = a(a + d)/2 = a²/2 + ad/2. Area(rectangle) = base × height = bc. I assume you can complete part (a) from there. For part (b), the peak power output is the product of the roof area and the given power output per square metre. I assume you can write that as a formula.

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