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Sum up all the distances to find the perimeter b. Calculate the area of each smaller shape using the appropriate formula. For triangles, use the area formula: Area = 0.5 * Base * Height.

curved surface area = π d h or 2 π r h It's important to learn the formulae above, as they will not appear on the formula sheet provided with your M4 exam paper. Cone volume = 1 3 π r 2 h ...