The length, width and height of a cuboid are 11cm, 6cm and 14cm respectively. If the cuboid is reduced by 3cm, the surface area will be reduced by () cm and the volume will be reduced by () cm

The length, width and height of a cuboid are 11cm, 6cm and 14cm respectively. If the cuboid is reduced by 3cm, the surface area will be reduced by () cm and the volume will be reduced by () cm

Surface area reduction
=（11+6）×2×3
=17×6
=102 square centimeters
Volume reduction
=11×6×3
=198 CC

If the correct result is 1.14cm, what is the closest real length of the object? A.1.145.cm b.1.13cm c.1.14cm d.1.15cm

D

In a square with an area of 60 square meters, what is the side length of the square?

Area = side length * side length
So 60 = x * x = x ^ 2
X = 2 root sign 15
Side length = 2 root sign 15

How many square centimeters of iron sheet does it need to make a cylindrical bucket with a bottom diameter of 80cm and a height of 60cm?

D=80CM,r=80/2=40CM,
S=πr²+2πrH
=πr（r+2H）
=3.14*40(40+120)
=314*40*160
square centimetre.
The rest is up to you!