Geometry semester 2 ; what’s the surface area of the regular pyramid below ?

The correct answer is option B.  756 units²

Step-by-step explanation:

Points to remember

Surface area of pyramid = Base area  + (4 * area of side triangle)

To find the base area

Base area = side * side

 = 14 * 14 = 196 units²

To find the area of side triangle

Area of triangle = bh/d

Area = (14 * 20)/2 = 140 units²

To find the surface area of pyramid

Surface area = Base area  + (4 * area of side triangle)

 = 196 + (4 * 140)

 = 756  units²

step-by-step explanation:

x-intercept:

(

−

1

+

√

7

,

0

)

,

(

−

1

−

√

7

,

0

)

y-intercept:

(

0

,

−

6

)