In a survey in a survey of 100 patients who recorded at the air hospital one day it was found that 70 complained of fever 50 had stomach ache and 30 were injured all hundred patients had least of one complaints .How many patients had all three complaints ​

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.