Question

find the surface area of chalk box whose length,breadth,height are 10cm , 15cm , 20cm respectively

this is a right solution ya not ​

Answer 1

Answer:

Surface area of the chalk box = 1300 cm²

Step-by-step explanation:

Given:

length = 10cm

breadth = 15 cm

height = 20 cm

Surface area of a Cuboid = 2[(lb) + (bh) + (lh)]

Surface area of the chalk box = 2 [ (10x15) + ( 15x20) + (10x20)]

= 2 [ 150 + 300 + 200]

= 2 ( 650)

= 1300 cm²