Question

all sides of quadrilateral ABCD are tangent to circle P. What is the perimeter of quadrilateral ABCD?​

Answer 1

42

Explanation:

Answer 2

Given:

Let us assume that E,F,G,H be the points at which the circle touches the line segment AB, BC, CD, DA.

The length of EB = 9.6 units.

The length of AH = 3.7 units.

The length of CD = 12 units.

We need to determine the perimeter of ABCD.

Lengths of sides of the quadrilateral ABCD:

Let CG = x, then DG = 12 - x

We know the property the property that "if the lengths of the two tangents drawn from an exterior point to a circle are equal".

Hence, applying the property, we have;

AH = AE = 3.7 units.

EB = BF = 9.6 units.

CG = CF = x units.

DG = DH = (12 - x) units.

Perimeter of quadrilateral ABCD:

The perimeter of ABCD can be determined by adding all the lengths of the sides of the quadrilateral ABCD.

Thus, we have;

`Perimeter=AE+EB+BF+FC+CG+GD+DH+AH`

Substituting the values, we have;

`Perimeter=3.7+9.6+9.6+x+x+12-x+12-x+3.7`

`Perimeter=50.6`

Thus, the perimeter of the quadrilateral ABCD is 50.6 units.