Question

Find the volume, lateral surface area and total surface area of the cuboid whose length, breadth and height are respectively: (a) 40 cm, 30 cm, 20 cm. ​

Answer 1

Answer:

volume = 24000, L.S.A= 2800, T.S.A = 5200

Step-by-step explanation:

Volume = l×b×h

40×30×20

24000.

L.S.A = 2(l+b)×h

2(40+30)×20

2(70)×20

140×20

2800.

T.S.A= 2(lb+bh+hl)

2(40×30+30×20+20×40)

2(1200+600+800)

2×2600

5200 ans

Answer 2

Answer:

given that 1 = 20cm,b=12,h=9cm

.•. T.S.A= 2 ( LB+BH+LH)

2(20×12) + (12×9)+(20×9)

2(240+108×180)

2×528

T.S.A==528 T.S.A = 1056 CM square