Answer:
Surface area of 5 sides = 51.2 cm²
Step-by-step explanation:
Given:
Side of cube = 3.2 cm
Find:
Surface area of 5 sides
Computation:
Surface area of 5 sides = Surface area of cube - Surface area 1 side
Surface area of 5 sides = 6a² - a²
Surface area of 5 sides = 6(3.2)² - (3.2)²
Surface area of 5 sides = 6(10.24) - 10.24
Surface area of 5 sides = 6a² - a²
Surface area of 5 sides = 61.44 - 10.24
Surface area of 5 sides = 51.2 cm²
-9+8k=7+4k
subtract 4k from both sides
-9+4k=7
add 9 to both sides
4k=16
divide both sides by 4
k=4
Answer:
y = 3
Step-by-step explanation:
y = k/x
xy = k
3 × 8 = k
k = 24
x = 8
y = 24/x
y = 24/8
y = 3
Answer:
Therefore the age of paint is 8915.78 years.
Step-by-step explanation:
Given that, the paint contain 34 % of the original carbon-14.
The exponential decay model for carbon-14 is
A= Remaining amount of carbon.
= initial amount of carbon.
Here A= 34% of
Taking ln both sides
Therefore the age of paint is 8915.78 years.
Answer:
Step-by-step explanation:
Triangles which have two legs and a hypotenuse are called right triangles. Right triangles have a special relationship between their sides called the Pythagorean Theorem. If a = 3 and b= 3, then find c using the Pythagorean theorem below.