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April 18, 2014

April 18, 2014

Posted by **lilman** on Wednesday, April 18, 2012 at 12:15pm.

224 cm2

448 cm2

896 cm2

2508.8 cm2

2. What is the lateral surface area of a cone with radius 19 cm and slant height 11 cm?

19 cm2

30 cm2

200 cm2

209 cm2

3. What is the lateral area of the square pyramid, to the nearest whole number?

165 m2

176 m2

330 m2

351 m2

4. What is the lateral surface area of the cone, to the nearest whole number?

221 cm2

240 cm2

304 cm2

620 cm2

5. What is the surface area of a cone with diameter 28 cm and height 22 cm in terms of ?

196 cm2

365 cm2

561.1 cm2

Can someone please help I'm not understanding this I know the formulas but not exactly how to use them or where to start.

- geometry -
**Ms. Sue**, Wednesday, April 18, 2012 at 12:16pmPlease post one of the formulas and I'll show you how to use it for a specific problem.

- geometry -
**lilman**, Wednesday, April 18, 2012 at 12:48pmOkay

#4 SA=LA+ 2B

#5 LA=ph(perimeter of the base * height)

SA=LA+ 2B

#6 SA=LA+2B or 2pirh+2pir^2

#8 SA=LA+B

#9 not sure

#10 believe is 19m

- geometry -
**lilman**, Wednesday, April 18, 2012 at 1:07pmwrong ones sorry!!

1) LA=ph

SA=LA+2B

2) LA=pirl

SA+LA+B

3) LA=1/2pl

4) LA=pirl

SA=LA+B

5) SA+LA+B

Believe these are the ones

- geometry -
**Ms. Sue**, Wednesday, April 18, 2012 at 1:10pm1)

LA = ph

P = 4 * 11.2

LA = 44.8 * 20

LA = 896 sq. cm

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