Answer:
216 cm²
Step-by-step explanation:
Applying,
V = lwh..................... Equation 1
Where V = volume of the cubiod, l = length of the base, width of the base, h = heigth of the cubiod.
From the question,
Since the base of the cubiod is squared,
Therefore,
w = l = 4 cm, V = 400 cm³
Substitute these values into equation 1
400 = 4×4×h
h = 400/(4×4)
h = 25 cm
A = lw+lh+wh.................. Equation 1
Where A = surface area of the cuboid.
Given: l = 4 cm. w = 4 cm, h = 25 cm
Substitute these values into equation 1
A = (4×4)+(4×25)+(4×25)
A = 16+100+100
A = 216 cm²
Answer:
a = -5
Step-by-step explanation:
We'll convert them all to approximate percent to compare.
Tricia 17%
Anchara, 4/25 = 16/100 = 16%
Julia reduced (16- 13.5)/16 = 2.5/16 = 5/32 = 15.625%
Tricia reduced her time by the biggest percent.
