All categories

3 years ago

Find the surface area

Mathematics

1 answer:

horsena [70]3 years ago

4 0

Formula: SA = 2πr² + 2πrh
h =40 in
Diameter d =12 in.
Radius = r = d/2 = 12/2 = 6 in

SA = 2π6² + 2π*6*40 = 72π + 480π = 552π (in²)

SA = 552π = 552*3.14 = 1733.28 (in²)
Answer: 1733.28.

You might be interested in

In the following exercises, multiply the binomials. Use any method.<br> 255. (a + b)(2a + 3b)

Alex_Xolod [135]

Answer:

Hence the expression $(a+b)(2a+3b)=2a^2+5ab+3b^2$

Step-by-step explanation:

Explanation

The given expression is (a + b)(2a+3 b).
We have to multiply the given expression.
Multiply the (a + b) by 3b, multiply the (a + b) by 2a then add like terms.

$\begin{matrix}{} & {} & {} & {} & a & + & b \\ \times & {} & {} & {} & 2a & + & 3b \\ \end{matrix}$

___________________

$\begin{matrix}{} & {} & {} & {} & 3ab & + & 3{{b}^2} \\ {} & {} & 2{{a}^2} & + & 2ab & {} & {} \\ \end{matrix}$

___________________

$\begin{matrix}{} & {} & 2{{a}^2} & + & 5ab & + & 3{{b}^2} \\ \end{matrix}$

7 0

1 year ago

Help with question 1

rjkz [21]

Answer:

si=Ptr/100

and di solution

4 0

3 years ago

Help me pls this is hard

ohaa [14]

Answer:

Opposite angles are right angles.

Step-by-step explanation:

There are no right angles in a parallelogram.

5 0

3 years ago

Two sailboats are traveling along the same path away from a dock, beginning from different locations at the same time. John’s bo

Sergeu [11.5K]

Answer: C

Step-by-step explanation: It’s C , I had the same question.

3 0

3 years ago

Read 2 more answers

Can anyone help me please.

Delvig [45]

How am I suppose to help you if I can’t see the words. It’s too blurry.

3 0

3 years ago