🖐🏼 Calculate the surface area of the 3D shape in the diagram below:

👉🏼 A bag contains blue and red beads in the ratio 5:9. What fraction of the counters are red?

👈🏼 Draw a Venn diagram to represent the following information: ξ = {1,2,3,4,5,6,7,8,9,10,11,12,13}, A = { square numbers }, B = { cube numbers }

👆🏼 Find P(A∪B)

👇🏼 . Work out the value of f^-1(10)