The lengths of different coloured cloth pieces are given. Red colour - 12.4 cm Blue colour - 14.6 cm Black colour - 11.7 cm The three cloth pieces are joined end to end. What is the total length of the cloth?
An umbrella is made by stitching 10 triangular pieces of cloth of two different colours (see the given figure), each piece measuring 20 cm, 50 cm and 50 cm. How much cloth of each colour is required for the umbrella?