Add the measures of the sides.

3 + 4 + 5 = 12 3 plus 4 plus 5 equals 12

The perimeter is 12 in.

Use the formula P = 2 ℓ + 2 w . p equals 2 script l plus 2 w .

P = 2 ( 3 ) + 2 ( 4 )   = 6 + 8 = 14 table with 2 rows and 2 columns , row1 column 1 , p , column 2 equals 2 , open 3 close , plus 2 , open 4 close , row2 column 1 , , column 2 equals 6 plus 8 equals 14 , end table

The perimeter is 14 cm.

Use the formula A = b h . eh equals b h .

A = 6 · 5 = 30 eh equals 6 middle dot 5 equals 30

The area is 30  in . 2 . 30 , in . squared . .

Use the formula A = 1 2 ( b h ) . eh equals , 1 half , open b h close .

A = 1 2 ( 7 · 6 ) = 21 eh equals , 1 half , open 7 middle dot 6 close equals 21

The area is 21  in . 2 . 21 , in . squared . .

Use the formula V = B h . v equals b h .

B = area of the base   = 3 ⋅ 5 = 15 V = 15 ⋅ 6 = 90   in . 3 table with 3 rows and 2 columns , row1 column 1 , b , column 2 equals . areaofthebase , row2 column 1 , , column 2 equals 3 dot 5 equals 15 , row3 column 1 , v , column 2 equals 15 dot 6 equals 90 in , . cubed , end table

The volume is 90  in . 3 . 90 , in . cubed . .

Use the formula V = π r 2 h . v equals pi , r squared , h .

V = 3.14 ⋅ 2 2 ⋅ 5   = 3.14 ⋅ 4 ⋅ 5 = 62.8   in . 3 table with 2 rows and 2 columns , row1 column 1 , v , column 2 equals , 3.14 , dot , 2 squared , dot 5 , row2 column 1 , , column 2 equals , 3.14 , dot 4 dot 5 equals , 62.8 , in , . cubed , end table

The volume is 62.8  in . 3 . 62.8 , in . cubed . .