Question

A triangle has sides that measure 7 units, 6 units, and 9.22 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. 22 units2 157 units2 39 units2 70 units2

Answer 1

Answer:

39 units²

Step-by-step explanation:

the perimeter of triangle =

7+6+9.22 = 22.22 cm

=> the radius oh the circle =

r = c/2π = 22.22/ 2×3.14

= 3.54

so, the area of the circle = π.r²

= 3.14 ×(3.54)²

= 3.14 × 12.53

= 39.34 => 39 units²