All categories

2 years ago

If a cone has a height 6 feet and volume 54ft, find the radius of the base

Mathematics

1 answer:

OLga [1]2 years ago

7 0

Answer:

The radius is approximately 2 93

You might be interested in

Please help, I need the answer soonnn!!!

Vedmedyk [2.9K]

Answer:

line B I hope this help!! good luckkk

5 0

2 years ago

Read 2 more answers

4:n=6:9 how do you get it?

MAVERICK [17]

Answer:

3.1

Step-by-step explanation:

7 0

2 years ago

Evaluate the expression when g=3 and h= 39. h-69 L B. X6 ?

lawyer [7]

Answer:
39-18 is 21.
Explanation:

3 0

2 years ago

Evaluate (6 + 2i) / (3 –i ). 5/4 + 6/4i 8/5 + 6/5i 20/8 + 12/8i 16/9 + 12/9i

Yuki888 [10]

We are given with a complex no. and need to simplify it , so let's start !!!

Let's assume that :

${:\implies \quad z=\sf \dfrac{6+2\iota}{3-\iota}}$

Now , Rationalizing the denominator or in other words multiplying and dividing ${z}$ by the conjugate of the denominator

${:\implies \quad z=\sf \dfrac{6+2\iota}{3-\iota}\times \dfrac{3+\iota}{3+\iota}}$

${:\implies \quad z=\sf \dfrac{(6+2\iota)(3+\iota)}{(3-\iota)(3+\iota)}}$

${:\implies \quad z=\sf \dfrac{6(3+\iota)+2\iota (3+\iota)}{(3)^{2}-(\iota)^{2}}\quad \qquad \{\because (a-b)(a+b)=a^{2}-b^{2}\}}$

${:\implies \quad z=\sf \dfrac{18+6\iota +6\iota +2(\iota)^{2}}{9-(-1)}\quad \qquad \{\because (\iota)^{2}=-1\}}$

${:\implies \quad z=\sf \dfrac{18+12\iota -2}{10}}$

${:\implies \quad z=\sf \dfrac{16+12\iota}{10}}$

${:\implies \quad z=\sf \dfrac{16}{10}+\dfrac{12\iota}{10}}$

${:\implies \quad {\bf \therefore}\quad \underline{\underline{z=\bf \dfrac{8}{5}+\dfrac{6}{5}\iota}}}$

Hence , Option B) (8/5) + (6/5)i is correct :D

7 0

1 year ago

Find two numbers, if Their sum is −7 and their difference is 14

Mademuasel [1]

Let
a------------> first number
b------------> second number

we know that
a+b=-7--------> a=-7-b----------> equation 1
a-b=14--------> equation 2

I substitute 1 in 2

(-7-b)-b=14-------------> -7-b-b=14----------> -7-2b=14-------> 2b=-7-14
2b=-21---------> b=-10.5
a=-7-b-------> a=-7-(-10.5)-----> a=-7+10.5------> a=3.5

the answer is
the two numbers are
a=3.5
and
b=-10.5

6 0

2 years ago

Read 2 more answers