Question

in the adjoining figure, the radius is 3.5 cm. find the perimeter of quarter of the circle ,correct to one decimal place.

Answer 1

Radius of the circle (r)= 3.5cm

The total perimeter of the circle (P)=

2πr=21.99cm

The perimeter of the quarter of the circle. = (2πr/4)=5.49cm

The perimeter of the above figure

={(2πr/4)+(3.5+3.5)}

=12.5cm

Answer 2

Perimeter:A shape's perimeter is defined as the total distance around the shape. Essentially, the perimeter is the length of the shape when stretched linearly. Perimeter is the total distance surrounding the shape in the 2D plane. Different shaped girths may match each other in length depending on the dimensions.

For example, if a circle is made of metal wire of length L, the same length of wire can create a square with equal side lengths.

quadrant: The axes (x-axis and y-axis) of a two-dimensional Cartesian plane system divide the plane into four infinite regions called quadrants. A horizontal line or x-axis and a vertical line or y-axis intersect at right angles. The intersection of the two straight lines is known as the reference point. All measurements are made with this point as the reference (or starting point) of the coordinate system.

A quadrant is simply defined as the region of the Cartesian plane formed when the x and y axes intersect.

Perimeter of the quadrant = length of the arc +2*radius

                                           = π$\frac{r}{2}$ + 2r

                                           =  π $\frac{3.5}{2}$ + 2*3.5

                                            = 12.5 cm

Hence the require answer is 12.5 cm.

To learn more geometry follow the given link

https://brainly.in/question/8461305?

#SPJ3