The answers are a) 43.96 cm, b) 351.68 cm, c) 28.8 cm and d) 307.72 mm
The formula to calculate the circumference of a circle is C= π d, or C = π 2r, where d is the diameter and r is radius.
A - C=3.14 x 2 x 7 = 43.96 cm
B - C=3.14 x 2 x 56 = 351.68 cm
C - C=3.14 x 9.2 = 28.8 cm
D - C=3.14 x 98 = 307.72 mm
Answer:
use PEMDAS
Step-by-step explanation:
start with doing what's in the parenthesis 3+2 = 5
7+4^3-3-5^2
then do ur exponents
7+64-3-25
then do you addition and subtraction left tto right
71-3-25
68-25
43
ur answer is 43
|-5 - 8| = 13
So The Answer Would Be 13
5x + 15 = 0 ...subtract 15 from both sides (subtraction property of equality)
5x = -15 ...divide both sides by 5 (division property of equality)
x = -15/5
x = -3