# Surface Area Questions and Answers (Q&A)

Danielbueno

359 views
Barry Mclean, Sales Manager
Letter C is the correct answer. To get the volume of a cone, the formula we must use is V=πr²h/3. π is equivalent to 3.14, r or radius is given in the problem is 8. But if ever you...Read More

275 views
Bailey Heaton
It would be 502.65 because the formula for the surface area of a cone is this:

("t" being the slant height) So first you have to do pythagorean theorem to fig...Read More

252 views
John Smith
3 cm. by 6 cm. by 9 cm.

229 views

How do you do this ??????????? I thought i need to calculate the volume

220 views
John Smith
64 square feet

213 views
I've calculated this two ways and came up with 360 units squared.

1) 1/2 slant height p (which is perimeter of base) + B (area of base)
1/2 (13)(40) + 100
260 + 100

210 views
Jansencatalin
96 cm2

210 views
John Smith
376.8 units squared

Circumfrence hight + circle on top+ circle on bottom= 31.47 + 78.5 + 78.5

210 views
John Smith
340 units squared

Special right triangle to find height of 12. 512(.5)=30 for each right triangle, 60 for each side. 4 sides since its a square so 60+60+60+60+ base. Base =1010 so 240+100.

209 views
420

209 views
Mrsmosher
37.33

208 views
Mrsmosher
122.46 units squared

Circumfrence slant legnth + base

208 views
This is incorrect the formula for finding the surface area for a cone is pie x r x s + pie x r x r this is not correct i am a teacher at st edmund campion