Find the length of the circumference of the circles under the following condition, take pie =3.14 pls show me explanation question no 1,

radius =20 cm

Step-by-step explanation:

Circumference of a circle = 2πr

where

r is the radius

From the question

r = 20 cm

We have

C = 2(20)π

= 40π

= 125.663706143592...

We have the final answer as

Hope this helps you

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this