3d shape formulas

Question 1

Area of a triangle

Answer 1

1/2(b*h)

Question 2

Area of a square

Answer 2

b^2

Question 3

Area of a rectangle

Answer 3

L * W

Question 4

Circumference of a circle

Answer 4

2pir

Question 5

Area of a circle

Answer 5

pi*r^2

Question 6

Area of a trapezoid

Answer 6

1/2h(b1+b2)

Question 7

Surface area of a rectangular prism

Answer 7

Perimeter of Base * height + 2 * Area of Base

Ph+2B

Question 8

Volume of a rectangular prism

Answer 8

Area of Base * height

B*h

Question 9

Surface area of a triangular prism

Answer 9

Perimeter of Base * height + 2 * Area of Base

Ph+2B

Question 10

Volume of a triangular prism

Answer 10

Area of the base * height

B*h

Question 11

Surface area of a rectangular pyramid

Answer 11

1/2 * Perimeter of Base * length + B

1/2PL+B

Question 12

Volume of a rectangular pyramid

Answer 12

1/3 * Area of Base * height

1/3Bh

Question 13

Surface area of a cylinder

Answer 13

2piradius^2 + 2piradius*height

Question 14

Volume of a cylinder

Answer 14

pir^2h

Question 15

Surface area of a cone

Answer 15

pir^2 + pir*2

Question 16

Volume of a cone

Answer 16

1/3piradius^2*height

Question 17

Surface area of a sphere

Answer 17

4pir^2

Question 18

Volume of a sphere

Answer 18

4/3pir^3