Question

Find the surface area of the cone. Leave your answer in terms pi

Answer 1

Answer:

The correct answer is option C.   119π cm²

Step-by-step explanation:

Points to remember

Surface area of cone = πrl + πr²

Where r is the base radius and l is the lateral edge

To find the surface area of given cone

Here r = 7 cm and l = 10 cm

Surface area =  πrl + π r² =( π * 7 * 10) + (π *7²)

  = 70 π + 49π

  = 119π cm²

Therefore correct answer is option C.    119π cm²

Answer 2

Answer:

The answer is C. 119cm³

Step-by-step explanation:

SA= $\pi r^{2} +\pi rl$

    = 49$\pi +\pi 7(10)$

    = 49$\pi +20\pi$

SA= 119$\pi$