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Answer:
120 degrees so answer b
Step-by-step explanation:
the opposite angles in the shape are equal so <klm = <kjm. this means the answer is the same as the sum of the other sides so 78 + 42 which is 120 degrees
Answer:
783 dollars
Step-by-step explanation:mark me brainliest
Answer:

Step-by-step explanation:
Given:
The area 'A' of a circle with radius equal to 'r' is given as:

In order to rewrite the given formula in terms of radius 'r', we need to isolate 'r'.
Dividing both sides by π, we get:

As
, the above equation becomes:

Taking square root both the sides, we get:

We neglect the negative result while taking square root as the radius can't be a negative number.
Thus, the formula for radius 'r' in terms of area 'A' is given as:

Answer:
The second base of the trapezoid b2 is 2.5 inches
Step-by-step explanation:
Here, we want to calculate the second base of the trapezoid.
Mathematically, the area of a trapezoid can be given as;
A = 1/2(a + b) h
where a and b represents the parallel bases and h is the height of the trapezoid
so this, we have from the question
1/2(4.5 + b2) * 6 = 21
3(4.5 + b2) = 21
divide both sides by 3
4.5 + b2 = 7
b2 = 7-4.5
b2 = 2.5 inches