15,750 cubic mm of wrapping paper is needed to wrap a single chocolate bar.
Step-by-step explanation:
Step 1; The chocolate bar has a length of 90mm and a width of 50mm. Its height is 3[tex]\frac{1}{2}[/tex] = 3.5mm. The volume of the chocolate bar is determined by multiplying the rectangle's area with the height. Its area is calculated by multiplying the length of the rectangle with the width.
Area of the chocolate bar = length × width = 90 × 50 = 4,500 square mm.
Step 2; Now to calculate the volume, we multiply the area with the height of the chocolate bar.
Volume of the chocolate bar = Area of the bar × height = 4,500 × 3.5 = 15,750 cubic mm.
So 15,750 cubic mm of paper will be needed to wrap the chocolate bar.
