MATH SOLVE

2 months ago

Q:
# How can you find the surface area of a composite solid made up of prisms ? (Help)

Accepted Solution

A:

Oh, this is easy. For any prism, you find the surface area by finding the are of all the sides. I will post all surface area formulas here, for reference

Cube:

Surface area = 6 × a2

Right circular cylinder:

Surface area = 2 × pi × r2 + 2 × pi × r × h

pi = 3.14

h is the height

r is the radius

Rectangular prism:

Surface area = 2 × l × w + 2 × l × h + 2 × w × h

l is the length

w is the width

h is the height

Sphere:

Surface area = 4 × pi × r2

pi = 3.14

r is the radius

Right circular cone:

Surface area = pi × r2 + pi × r ×( √(h2 + r2))

pi = 3.14

r is the radius

h is the height

l is the slant height

Right square pyramid:

Surface area = s2 + 2 × s × l

s is the length of the base

h is the height

l is the slant height

Cube:

Surface area = 6 × a2

Right circular cylinder:

Surface area = 2 × pi × r2 + 2 × pi × r × h

pi = 3.14

h is the height

r is the radius

Rectangular prism:

Surface area = 2 × l × w + 2 × l × h + 2 × w × h

l is the length

w is the width

h is the height

Sphere:

Surface area = 4 × pi × r2

pi = 3.14

r is the radius

Right circular cone:

Surface area = pi × r2 + pi × r ×( √(h2 + r2))

pi = 3.14

r is the radius

h is the height

l is the slant height

Right square pyramid:

Surface area = s2 + 2 × s × l

s is the length of the base

h is the height

l is the slant height