Question

a cubical box at each age 10 cm and cubical box is 12.5 cm long 10 cm wide and 8cm high which box has the greater lateral surface area and by how much

Answer 1

let the lateral surface areas of the cubical and cynical boxes be l1 and l2
l1 =4(axa)
=4 x 10cm x 10 cm
=400 cm square
and l2= 2(length + breadth) height
= 2 (12.5 +10)8 cm square
= 360 cm square
therefore l1-l2=(400-360) cm square= 40 cm square
thus the cubical box has greater lateral surface area and greater by 40 cm square