Question

Find the surface area of a cuboids having length 15cm, breadth 12cm,ht 10cm

Answer 1

Step-by-step explanation:

lateral surface area=540 cm^2

Total surface area=900 cm^2

Given:

Length=15cm,breadth=12cm and height=10cm

To find:

Total surface area and lateral surface area

Solution:-

We know that

Lateral surface area of cuboid=2(l+b)h

=2(15+12)10

=2(27)10

=2×270

=540 cm^2

We also know that

Lateral surface area=2lb+2lh+2hb

=2×15×12+2×15×10+2×10×12

=360+300+240

=900 cm^2

Answer 2

Answer:

TSA of a cuboid is 2(lb+bh+hl)

so 2(15*12+12*10+10*15) =900cm^2

LSA = 2(l+b)h

so 2(15+12)10=540cm^2