Question

Find the surface area of chalkbox whose length breadth and height are 16cm, 8cm and 6cm respectively

Answer 1

Surface area = 2(lb + bh + hl)

= 2(48 + 96 + 128) = 2(272)

= 544 cm^2

-WonderGirl

Answer 2

2(lb+bh+hl)
2(16×8+8×6+6×16)
2(128+48+96)
2(272)
=544