Mathematics for IGCSE & O level - Mensuration (Section 2 - No. 4)
If a shape has an area of 40 cm², and you double the height while keeping the base the same, what will be the new area?
20 cm²
40 cm²
80 cm²
160 cm²
คำอธิบาย
Area = 0.5 * b * h, since we double h, area will be doubled.