BECE Mathematics 2019 Paper

Concept:The perimeter of a parallelogram is twice the sum of its two adjacent side lengths.Explanation:A parallelogram has opposite sides equal in length.Given two adjacent sides are $4.8\ \text{m}$ and $7.2\ \text{m}$, the other two sides are also $4.8\ \text{m}$ and $7.2\ \text{m}$ respectively.The perimeter is the total distance around the shape, equal to the sum of all four sides.Thus, perimeter $= 4.8 + 7.2 + 4.8 + 7.2$.Group the equal sides: perimeter $= 2(4.8 + 7.2)$.First add the bracket: $4.8 + 7.2 = 12.0$.Then multiply by 2: perimeter $= 2 \times 12.0 = 24.0\ \text{m}$.Answer:The perimeter of the parallelogram is $24.0\ \text{m}$, which is option C.