What is the approximate circumference of the circle shown below

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20

Urgent? will give brainliest given that the blue triangle is a right triangle, which expression correctly gives the area of the red square? a) a2 + b2 b) a2 - b2 c) a2 - c2 d) c2 - a2

Point q is equidistant from the sides of ∠tsr. find m∠rst.