Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Normally when asked about the surface area, the lateral surface area is the one being referred to but let me just consider both the lateral surface area and the total surfX:VV
For the lateral surface area, you'll have the formula:
A = π r l
where A is the area
         r is the radius 
         l is the slant height
A = π (3cm)(7cm)
A = 21 π cm²
A = 65.97 cm²

For the total surface area, you'll have:
A = π r l + π r²
A = π(3cm)(7cm) + π(3cm)²
A = 30 π cm²
A = 94.25 cm²
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts