Question

The table below gives data relating to the dimensions and surface areas of cuboids and cubes. Fill in the missing items. 8 cm Length Breadth Height Surface area (0) 13 cm 10 cm (ii) 15 cm 10 cm 1300 cm? (iii) 1.5 cm 50 cm 5.5 m? 600 m² (given that the solid is a cube) 2 (iv) - - 1​

Answer 1

Answer :

• Surface area = 628cm^2
• Height = 20cm
• Breadth = 3.8cm
• Length,Breadth and Height = 10m

Step-by-step explanation:

(i) Surface area of Cuboid =2(lb+bh+hl)

=2(13×10+10×8+8×13)

= 2(130+80+104)

=2(314)

=628cm^2

(ii) Surface area of Cuboid =2(lb+bh+hl)

1300=2(15×10+10×h+h×15)

1300=2(150+10h+15h)

1300= 300+20h+30h

1300-300= 50h

1000/50=h

h =20

(iii) Surface area of Cuboid = 2(lb+bh+hl)

5.5=550cm^2

550=2(1.5×b+b×50+50×1.5)

550=2(1.5b+50b+75)

550=3b+100b+150

550-150=103b

400=103b

b=3.8

(iv) Surface area of Cube = 6×(side)^2

600= 6×(a)^2

600/6= a^2

100=a^2

a = √100

a=10

Answer 2

Answer:

hope my answer helps you