A rectangular field is to be fenced on three sides with 1000 m of fencing. The fourth side is a straight river's edge that will not be fenced. Find the dimensions of the field so that the area of the enclosure is 120000 square meters.

or

Step-by-step explanation:

We are given that

Fencing used on three sides=1000 m

Area of field enclosure=120000 square meters

Let x be the length and y be the width of rectangle.

Fencing used on three sides=2x+y

Area of  field=

Using quadratic formula

Dimension of the field

or

where r the answers

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh