Triangle: 0.5 * 5* 4 = 10 cm^2
Square : 5*5=25 cm^2
25 + 10 =35 cm^2
Answer:
C)
B)
C)
Step-by-step explanation:
<h3>Question-1:</h3>
recall the surface area formula of cylinder
given that,h=5 and r=0.7
substitute:
simplify parentheses:
simplify multiplication:
hence, our answer is C
<h3>Question-2:</h3>
remember the surface area formula of cone
given that,r=7 and s=10
substitute:
simplify parentheses:
simplify multiplication:
hence, our answer is B
<h3>Question-3:</h3>
now for the question-3 we need a little bit understanding
remember the surface area formula of cube
we are given that, Thus
substitute:
divide both sides by 6:
square root both sides:
hence, the measurement of each
edge is 10 cm therefore our answer is C)
Missing questions and subsequent solutions:
(a) Write an equation for company A for cost, C, number of months, n, that Beni will pay for the phone.
Solution:
For company A:
C = 72.25 + 85.50n
(b) Write an eqyation for company B for cost, C, and number of months, n, that Bei will pay for the phone.
Solution:
For company B:
C = 151.25 + 65.75n
(c) Write an inequality when the cost from company A is better than cost from company B.
Solution:
72.25 + 85.50n ≤ 151.25 + 65.75n
(85.50-65.75)n ≤ (151.25 - 72.25)
19.75 n ≤ 79
n ≤ 4
(d) Value of n for which cost from the two companies will be the same.
Solution:
If cost for companies A and B are the same, then
72.25 + 85.50n = 151.25 + 65.75n
(85.5 - 65.75)n = 151.25 - 72.25
19.75n = 79
n = 79/19.75 = 4 months
After 4 months,
C = 72.25 + 85.5*4 = $414.25
<span>the set of all the solutions of an equation or condition.
</span>
All you do is multiply 60 * 40 = 2400 ft squared. you find area of a square by multiplying base * length. SO the answer is "D"