Pls help with this question.i will give the brainliest 500 points

132

Step-by-step explanation:

131.88 m

Step-by-step explanation: Formula for circumference of a circle: 2 * pi * r

(Using 3.14 as pi)

The first thing you should do is find the radius. The radius is half of the diameter, which is the line through the middle of the circle. Diameter, 42, divided by 2, equals 21. Next you plug the radius, 21, and pi, 3.14, into the 2*pi*r formula:

2 * 3.14 * 21 = 131.88

That's the circumference, hope this helped.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5