Let x=small circle
2x = bigger circle

πx^2 + π(2x)^2 = 80π
x^2 + 4x^2 = 80
5x^2 = 80
x^2 = 16
x = +/- 4
but we need the positive one because there's no negative measurement so
the answers are:
4m and 8m

3 0

3 years ago

6. There are 90 seats in the school auditorium. The school had a sold out show of their play last weekend, and made $315. The co

Olegator [25]

Answer:

Step-by-step explanation:

4 0

3 years ago

Anyone wanna 1v1 on RL?

german

Answer:

in what I play on Xbox, what you tryna play i got 2k21, cod and other games but that the only games I play but I got more if u play Xbox name Tripple k3

7 0

3 years ago

If a = 7 and b = 11, what is the measure of ∠B? (round to the nearest tenth of a degree) A) 32.5° B) 39.2° C) 50.5° D) 57.5°

Ilia_Sergeevich [38]

Answer:

D) 57.5°

Step-by-step explanation:

As the question is not complete. So, let's suppose it is a right angle triangle then, we can apply Pythagoras theorem to calculate the hypotenuse or the third side.

Pythagoras Theorem = $c^{2}$ = $a^{2} + b^{2}$