An umbrella is made by stitching 8 triangular pieces of cloth of two different colours, each piece measures 60cm, 60cm and 20cm. How much cloth of each colour is required for the umbrella?

• A. (50 sqrt{35} cm^2 )
• B. (25 sqrt{65} cm^2 )
• C. (50 sqrt{45} cm^2 )
• D. (25 sqrt{55} cm^2 )