Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 6 - No. 4)
A cuboid has dimensions of 3cm, 4cm, and 5cm. What is the length of its longest diagonal?
5cm
7.07 cm
4cm
sqrt(50) cm
คำอธิบาย
d = sqrt(3^2 + 4^2 + 5^2) = sqrt(50)