Chap 27

Question 1

Area of a square

Answer 1

s x s

Question 2

Area of rectangle

Answer 2

l x b

Question 3

Perimeter of a rectangle

Answer 3

2(l+b)

Question 4

Perimeter of a square

Answer 4

4s

Question 5

Area of a parallelogram

Answer 5

base x height

Question 6

Area of a triangle

Answer 6

1/2 base x height

Question 7

Volume of a cube formula

Answer 7

s^3

Question 8

Area of a trapezium

Answer 8

1/2 (a+b) x h

Question 9

Volume of a cuboid

Answer 9

l x b x h

Question 10

Surface area of a cuboid

Answer 10

2(lb+bh+hl)

Question 11

Surface area of a cube

Answer 11

6s²

Question 12

Area of a circle

Answer 12

πr²

Question 13

Perimeter of a semi-circle

Answer 13

πr+d

Question 14

Perimeter of 3/4 circle

Answer 14

3/4 x 2πr+d

Question 15

Perimeter of 1/4 circle

Answer 15

1/4 x 2πr+d

Question 16

Volume of a cylinder

Answer 16

πr²h

Question 17

Surface Area of a Cylinder

Answer 17

2πr(r+h)

Question 18

Arc Length Formula

Answer 18

θ/360 x 2πr

Question 19

Area of a sector

Answer 19

θ/360 x πr²

Question 20

Curved surface area of a cylinder

Answer 20

2πrh

Question 21

Volume of a sphere

Answer 21

4/3πr³

Question 22

Volume of a hemisphere

Answer 22

2/3πr³

Question 23

Surface area of a sphere

Answer 23

4πr²

Question 24

Surface area of open hemisphere

Answer 24

2πr²

Question 25

surface area of a closed hemisphere

Answer 25

3πr²

Question 26

volume of pyramid

Answer 26

1/3 x area of base x height

Question 27

volume of prism

Answer 27

area of cross section x height

Question 28

Volume of a cone

Answer 28

1/3πr²h

Question 29

Surface Area of a Cone

Answer 29

πrl+πr²

Question 30

frustum (of a cone or pyramid) formula

Answer 30

volume of big cone/pyramid - Volume of small cone/pyramid