Total Volume3(2)(3)(4)= 72𝒇𝒕𝟑

Half cord=𝟏𝟐𝟖

𝟐= 64𝒇𝒕𝟑

Use algebra to express the volume of the solid

Surface Area= Area of the 2 triangles + Area of the 3 rectangles

Lateral Area= Area of the 3 rectangles

S= (28cm)(12cm) + 2 (48𝒄𝒎𝟐)S= 336 𝒄𝒎𝟐 + 9𝟔𝒄𝒎𝟐= 432𝒄𝒎𝟐

OR

S= 2 (8)(6) + 2(6)(12)+ 2 (8)(12) S= 𝟗𝟔 + 𝟏𝟒𝟒 + 𝟏𝟗𝟐= 432𝒄𝒎𝟐

Find the Surface Area

P = 10+24+26=60

B = 𝟏

𝟐(24)(10)= 120

S = (60)(20) + 2 (120)= 1200 + 240= 1440 𝒊𝒏𝟐

ORSurface Area of a REGULAR PYRAMID