To find the shaded area in an image first calculate the total area of the figure and then subtract the white area from this total.
<h3>How to find the area of a shaded area?</h3>
- Determine the total area of the figure, in this case, the are of the rectangle that contains the triangle and the semicircle.
- Calculate the area of the white region.
- Substract the non-shaded area to the total area.
<h3>How to find out the area of different shapes?</h3>
- Rectangle: side x side = 2 x 4 = 8 square feet
- Isosceles triangle = 1/2 base x height
- Semicirle = 1/2 (π x r^2)
Note: This question is incomplete because the image of the shaded regions is not provided; due to this, the answer is based on general knowledge.
Learn more about triangles in: brainly.com/question/2773823
We would find the midpoint by applying the formula for determining the midpoint of a segment which is expressed as
Midpoint = (x1 + x2)/2, (y1 + y2)/2
From the given points,
x1 = 4, y1 = - 5
x2 = 6, y2 = 1
Midpoint = (4 + 6)/2, (- 5 + 1)/2
Midpoint = 10/2, - 4/2
Midpoint = 5, - 2
The one you have marked is correct.
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The value of the expression 3ac - b² - c² is -61.
<h3>What is an expression?</h3>
Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
The expression will be solved as below:-
3ac - b² - c² = ( 3 x 4 x -3 ) - ( 4 )² - ( -3 )²
= ( -36 - 16 - 9 )
= ( -61 )
Therefore, the value of the expression 3ac - b² - c² is -61.
To know more about an expression follow
brainly.com/question/723406
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