Perimeter of quadrant

annie, to find the perimeter of a semicircle on top of a triangle, you have to know 3 things: 1) The word " semicircle" literally means " half of a circle". 2) The formula for calculating the perimeter of a circle (Which is pi*d, where d is going to be the diameter of the circle --- or in our case the semicircle, and pi means the number π -- or 3.141592653.....) 3) You need to realize that because the semicircle is on top of the triangle, the length of that side of the triangle is going to be the same as the diameter of the semicircle. Now, because of fact #1 above, all you need to do is calculate the perimeter of a circle (using facts #2 and #3) and then divide the answer by 2. In other words Perimeter of semicircle = (pi*d) ÷ 2 If you now want to calculate the perimeter of the semicircle and the triangle together, then all you have left to do is to add the length of the other two sides of the triangle to the perimeter of the semicircle. I hope this information helps you to understand so that you will be able to do similar problems in the future. :) Its not always like that. You could only do that when all your sides lengths are equal. Say you have a octagon with equal length of sides = 5 , then you could find the perimeter by multiplying the number of sides by the length. In this case, 8 x 5 = 40. But if all your sides are not equal then you have to add them one by one. Well, the question was asking for the perimeter of the square. A square's sides are all congruent. A f...

A piece of string 25cm long goes exactly once around the edge of a plate in the form of a quadrant Calculate the area of the quadrant? Presumably the plate is completely flat. The circumference will be 4*25 = 100 cm. First find the radius of the plate by rearranging the formula: 2*pi*radius = 100cm radius = 100/2*pi = 15.91549431 cm. Now use the formula pi*radius2 to find the area of the plate, and then divide your answer by 4 to give you the area of the quadrant. pi*15.915494312 = 795.7747155/4 = 198.9436789cm2. Therefore, the area of the quadrant is 199 cm2 correct to three significant figures.

Does calculating circumference have you running in circles? Our circumference calculator is an easy way for you to find the circumference of any circular object. Simply enter the radius of the circle and hit “calculate.” You can click the “reset” button if you need to clear the circumference calculator in order to find the answer for another circle. Table of Contents Show • • • • • • • • Try our Circumference Calculator now! And if you're not sure what the radius is or how to find it, we'll walk you through some of the basics of finding a circle's circumference below. What is the Circumference of a Circle? The circumference of a circle is the measurement around a circle's edge. It can be compared to finding the perimeter of a shape (although the word perimeter is reserved specifically for polygons). If you were to cut a circle and lay the outline flat, the length of the line it created would be its circumference. The circumference can be measured in any unit or system that traditionally measures length - imperial (inches, feet, etc.) or metric (centimeters, meters, etc.). Whichever unit the radius is measured in will also be the unit the circumference is calculated in. The equation used to find circumference is C = 2Πr, where C stands for circumference, R stands for radius, and Π is Pi, a mathematical constant equivalent to approximately 3.14 (see more below). You can also calculate the circumference of a circle using the diameter, with the equation C = Π * d. If you only ...

• • • • • • Quarter Circle – Introduction In our everyday lives, we come across many shapes in the form of various objects, like a square table, a rectangular tray, a football in the shape of a circle, oval eggs, etc. Have you ever observed the shape of a slice of pizza when divided into 4 equal parts? It looks like a triangle, but one of the sides is actually curvy. This shape is called a quarter circle. What Is a Quarter Circle? A quarter of anything means one-fourth of that object or thing. Thus, by a quarter of a circle, we mean one-fourth of the circle. We can also get a quarter circle by dividing a semicircle into two halves. The following image shows division of a circle in quarters. In mathematical terms, the area created by two perpendicular radii and one-fourth area of the circumference of a whole circle is called a quarter circle. It is also often referred to as a quadrant. Area of a Quarter Circle One-fourth area of a whole circle is known as the area of a quadrant or a quarter of a circle. Quarter circle formula for area can be given as: Area of a quarter circle $=$ Area of circle $/ 4 = \frac)$ $= 70 + 54.95$ $= 124.95$ yards Practice Problems

First work out the area of the whole circle by substituting the radius of r = 21 cm into the formula for the area of the circle. The area of the circle $=\pi \times +2 \right)r \right]$ of a quadrant of the circle.