Answer:
A = 94.2 cm²
Step-by-step explanation:
Given that,
Length, l = 5 cm
Width, b = 2 cm
Height, h = 5.3 cm
We need to find the surface area of the solid cuboid.
The formula for the surface area of the sold cubiod is given by :
A = 2(lb+bh+hl)
Substitute the values in the above formu;a
A = 2(5(2)+2(5.3)+(5.3)(5))
= 2(10+10.6+26.5)
= 2(47.1)
= 94.2 cm²
Hence, the required surface area is 94.2 cm².
The percent of discount from when Mark bought it versus it's original price is 20%. I think
Answer:
3125*k^9 + y^3 is an integer my closure property.
but 5^(1/3) is not an integer, which forces z to be irrational.
Note that there is no way an integer value can rationalize 5^(1/3)
Step-by-step explanation:
x^3 = 25z^3 - 5y^3
x^3 = 5 ( 5z^3 - y^3)
x = (5 ( 5z^3 - y^3) )^(1/3) must be an integer
= 5^(1/3) * (5z^3 - y^3)^(1/3)
Then (5z^3 - y^3)^(1/3) = 25*k^3 for some integer k
5z^3 - y^3 = 15625*k^9
5z^3 = 15625*k^9 + y^3
z^3 = 3125*k^9 + (1/5)*y^3
z = ( 3125*k^9 + (1/5)*y^3 )^ ( 1/3)
Answer:
i thinnk A
Step-by-step explanation:
