Chap 7 - area, perimeter, volume

Question 1

properties of prism

Answer 1

-3D
-all sections are equal (cross- sections)

Question 2

Perimeter of square

Answer 2

4b

Question 3

Perimeter of react.

Answer 3

2( L + b )

Question 4

Perimeter of circle (circumference)

Answer 4

πd

Question 5

Perimeter of circle arc (circumference)

Answer 5

angle/ 360 x πd

Question 6

Area of square

Answer 6

b^2

Question 7

Area of react

Answer 7

Lb

Question 8

Area of triangle

Answer 8

1/2 x bh

Question 9

Area of trap.

Answer 9

h( a+b )/ 2
a & b are parrel sides

Question 10

Area of circle

Answer 10

πr^2

Question 11

Area of rhombus

Answer 11

Lb

Question 12

Area of parallelogram

Answer 12

Lb

Question 13

Area of circle sector

Answer 13

angle/ 360 x πr^2

Question 14

Area of curved surface area of cone

Answer 14

πrL
L = length from bottom to tip

Question 15

Area of surface of Sphere

Answer 15

4πr^2

Question 16

Volume of cube

Answer 16

b^3

Question 17

Volume of cuboid

Answer 17

Lbh

Question 18

Volume of cylinder

Answer 18

πr^2 h

Question 19

Volume of prism

Answer 19

1/2 x bh x h
(cross-section x h)

Question 20

volume of pyramid

Answer 20

1/3 x base area x perpendicular height

Question 21

Volume of cone

Answer 21

1/3 x πr^2 h

Question 22

Volume of Sphere

Answer 22

4/3 x πr^3