The answer is 3. You divide the numbers in the bigger triangle by the numbers on the smaller one to find the scale factor
Answer:
what do u need to find in here?
Answer:
a. 
b. 
c. 
Step-by-step explanation:
Given,
Total books = 40,
Maths books = 20,
History books = 15,
Geography books = 5,
a. If a book is randomly selected,
Then the probability that the book is a history book,




b. If two book is randomly selected,
Then the probability that both books are from history,





c. If two book is randomly selected,
Ways of selecting any two books from different subjects
= maths and history + maths and geography + history and geography,




Then the probability that both books are from different subjects



Answer:
3.14(3.1)^2 = 30.1754
Step-by-step explanation:
pi times radius squared - area of a circle
Answer:
90+54+a=180
90+54=144
180-144=36
a=36
Step-by-step explanation: