Mathematics for IGCSE & O level - Mensuration (Section 10 - No. 18)
A rectangular prism has dimensions of 4 cm x 6 cm x 10 cm. What is its total surface area?
480 cm²
240 cm²
248 cm²
120 cm²
คำอธิบาย
Surface Area = 2lw + 2lh + 2wh = 2(4*6) + 2(4*10) + 2(6*10) = 48+80+120 = 248 cm²