Answer:
Surface area of the rectangular prism = 62 inch²
Step-by-step explanation:
Surface area of a rectangular prism =2(wl+hl+hw)
w = width = 3 inches
h = height= 2 inches
l = length = 5 inches
A = 2(3x5 + 2x5 + 3x2) = 62 inch²
Answer:
29
Step-by-step explanation:
Order of Operations = PEMDAS
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Answer:
25x2-49x4= -146
Step-by-step explanation:
i just used calculator
This is a classic example of a 45-45-90 triangle: it's a right triangle (one angle of 90) & two other sides of the same length, which means two angles of the same length (and 45 is the only number that will work). With a 45-45-90 triangle, the lengths of the legs are easy to determine:
45-45-90
1-1-sqrt2
Where the hypotenuse corresponds to sqrt2.
Now, your hypotenuse is 10.
To figure out what each leg is, divide 10/sqrt2 (because sqrt2/sqrt2 = 1, which is a leg length in the explanation above).
Problem: you can't divide by radicals. So, we'll have to rationalize the denominator:
(10•sqrt2)/(sqrt2•sqrt2)
This can be rewritten:
10sqrt2/sqrt(2•2)
=10sqrt2/sqrt4
=10sqrt2/2
=5sqrt2
Hope this helps!!
