Question

Find LSA TSA and volume of the following (a) cube of side = 10 cm. (b) cuboid of Length=5 cm B=4 cm and Hight=2 cm. ​

Answer 1

Answer:

a) length of cube=10cm

TSA of cube= 6a2

=6×10×10

=600cm2

LSA of cube=4a2

4×10×10

=400cm2

volume of cube=A3

=10×10×10

=1000cm3

b) length =5 cm breadth =4 cm height =2 cm

LSA of cuboid=2h(l+b)

LSA=2×2(5+4)

LSA=4×9

LSA=36cm2

TSA of cuboid=2(lb+bh+lh)=2[5×4+4×2+2×5]

TSA=2[20+8+10]=2×38

TSA=76cm2

Volume of a cuboid = (length × breadth × height)

=5×4×2

=40cm3