The area of a region measures how much surface it covers. Here is one square centimetre. It's 1 cm long and 1 cm wide. It covers an area of 1 square centimetre, or 1 cm2 Here is a rectangle that is 4 cm long and 2 cm high. It covers an area of 8 cm2. The area is 8 square centimetres. You can find this area by counting the square centimetres. Here is a rectangle that's also a square. Its dimensions are 3 cm by 3 cm The length and width are both 3 centimetres long. It covers an area of 9 cm2. You can find the area of 9 square centimetres by counting them. Here's a rectangle that's 1 cm tall and 6 cm long. Its area is 6 cm2. This rectangle has an area of 12 square centimetres. Its area is 12 cm2 What are the dimensions? Enter them here:   length =    width = Check your answers by holding the cursor over the box >>> Here's another rectangle that also has area 12 cm2. The length is 6. Why does the width have to be 2? Answer here:   Check your answer by holding the cursor over the box: A rectangle has area 30 cm2. What could its dimensions be?. Choose one:            3 x 12     8 x 4     6 x 5     10 x 2 Check your answer here You now have a quick method for finding the area of any rectangle: length=4   width=2 area = 4x2 = 8 length=3   width=3 area = 3x3 = 9 length=4   width=3 area = 4x3 = 12 length=6   width=1 area = 6x1 = 6 This gives us a formula: "To find the area of a rectangle, multiply the length by the width"           A = L x W This also means we don't need accurate pictures any more! Move on to page two ... Resources Content, HTML, graphics & design by Bill Willis 2024