1. You have to find the area of the rectangle and then add it to the area of the traingle. So you'd have 6×3 for the rectangle, added to ((15-3)÷2)×(6+6) for the triangle. So the overall area would be 18+72 which is 90.
2. Once again you just have to find the areas of the individual shapes and then add them together. So, 8×4 added to (4+4)×4 added to 12×12. So the area would be 32+32+144 which is 208.
3. First work out the triangles area: (12-8)×((16-10)/2) which equals 12. And then add it to the rectangles area: 16×8 which is 128. So the area is 140.
4. Find out the area of the circles: 3.14×1.5^2 which is 7.065. This is the area for a full circle and as there is 4 halves in the picture, multiply this number by 2, giving a total circle area of 14.13. Then simply add the square area which is 3×3. So the total area is 23.13.
It's the same for the last two. Seperate 5 into a triangle, long rectangle down the bottom and a squarish one up top. Work out the individual areas for these three shapes and then just add them.
For 6 just work out the semicircle, rectangle and triangle areas and add them once more.
Hope that helps! :)
