This question is too vague to have an answer, but here is one.
For the shaded area (pie wedge) of a circle, find the area of the circle and multiply by the ratio of the wedge angle to the entire circle (angle/360).
For the shaded region of a triangle, find the area of the smaller triangle, if necessary using trig functions to define a known angle or length of a side.
For other polygons, you may be able to divide the area into triangles separately, then sum their areas.
To find the area of the shaded part in a rectangle, you first find the total area of the rectangle by multiplying its length by its width. Then, you subtract the area of the non-shaded part from the total area to get the area of the shaded part. The formula would be: Area of shaded part = Total area of rectangle - Area of non-shaded part
The area of the shaded region can be gotten by multiplying the area of the circle by the subtended angle of the sector.
find the area of the shaded sector 12cm and 24°
To find the area of the shaded sector, we need to determine the total area represented by the shaded and non-shaded parts. If the shaded sector is 155 and the rest is 4.3, the total area is 155 + 4.3 = 159.3. The area of the shaded sector is already given as 155, so rounding it to the hundredth gives us 155.00.
Either directly or by finding the area of the whole and subtracting the area of the non-shaded part.
You will need to divide the shaded area into smaller parts, such as triangles or rectangles, or find the length of sides of these polygons.
To find the area of the shaded sector, we first need to determine the area of the entire circle with a radius of 12, which is calculated using the formula (A = \pi r^2). Thus, the area of the entire circle is (A = \pi (12^2) = 144\pi). If the not shaded area is 100, the area of the shaded sector is then (144\pi - 100). Therefore, the area of the shaded sector is approximately (144\pi - 100) square units.
Well, darling, if you shaded all but three eighths of the rectangle, then the shaded area is 5/8 of the total rectangle. To find the percentage of the rectangle that is not shaded, you subtract the shaded area from 100%. So, 100% - 62.5% (5/8 as a percentage) = 37.5%. Voilà, 37.5% of the rectangle is not shaded.
To find the area of a shaded region within a regular octagon, first calculate the area of the entire octagon using the formula ( A = 2(1 + \sqrt{2})s^2 ), where ( s ) is the length of a side. Then, determine the area of any non-shaded regions (such as triangles or smaller shapes) within the octagon and calculate their total area. Finally, subtract the area of the non-shaded regions from the total area of the octagon to find the area of the shaded region.
You use proportions
To find the area of a shaded parallelogram, you can use the formula ( \text{Area} = \text{base} \times \text{height} ). Measure the length of the base and the perpendicular height from the base to the opposite side. Multiply these two measurements to obtain the area of the parallelogram. If the shaded area is part of a larger figure, ensure you only calculate the area of the shaded section.
To find the area of a shaded region, you first need to identify the shapes involved. Calculate the area of each individual shape separately using the appropriate formulas (e.g., area of a rectangle = length x width, area of a circle = πr^2). Then, subtract the area of any non-shaded regions from the total area to find the area of the shaded region. Be sure to pay attention to any overlapping areas or irregular shapes that may require more complex calculations.