Atriangle has sides that measure 2 units, 5 units, and 5.39 units. what is the area of a circle with a circumference that equals the perimeter of the triangle? use 3.14 for π, and round your answer to the nearest whole number.
39 units²
25 units²
49 units²
12 units²

12

units^2

step-by-step explanation:

step-by-step explanation:

in order to find the area of the circle, we need its radius (r).

if perimeter of the triangle is equal to the circumference of the circle then we can write:

perimeter=5+2+5.39=12.39 = circumference=2pi(r)

solving for r, we get r=12.39/2pi = 1.97

so the area of the circle = pi(r)^2 = pi(1.97)^2 =12.19

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "