maths mensuration

Question 1

kilometer, metre, centimeter, millimeter converaions

Answer 1

1km = 1000m
1m = 100
1m = 1000 mm
1cm = 10mm

Question 2

Tonne, kilogram, gram conversions

Answer 2

1 tonne = 1000kg

1 kg = 1000g

Question 3

Litre, centiliter, milliliter, cubic centimeter conversions

Answer 3

1 L =100cl or 1000ml
1cl = 10 ml
1 ml = 1cm³

Question 4

Circumference of a circle =

Answer 4

pi x diamater

Question 5

Arc length =

Answer 5

sector angle/360 x 2 pi r

Question 6

sector area =

Answer 6

Sector angle/360 x pi r squared

Question 7

Cylinder surface area

Answer 7

Curved: 2πrh
Total: 2πr(h + r)

Question 8

Cylinder volume

Answer 8

πr²h

Question 9

Cone surface area

Answer 9

curved = πrl
Total = πr(l + r)

Question 10

cone volume

Answer 10

1/3 πr²h

Question 11

Sphere surface area

Answer 11

4πr²

Question 12

Sphere volume

Answer 12

4/3 πr³

Question 13

Pyramid surface area

Answer 13

base are + area of the shapes in the sides

Question 14

Volume of pyramid

Answer 14

1/3 x base area x perpendicular height

Question 15

Surface area of cubed

Answer 15

2(lb + bh + lh)

Question 16

Volume of cuboid

Answer 16

l x b x h

Question 17

Surface area of cube

Answer 17

6l ²

Question 18

Cube volume

Answer 18

l³

Question 19

Surface area of hemisphere

Answer 19

curved: 2πr²
Total: 3πr²

Question 20

Volume of hemisphere

Answer 20

2/3 πr³

Question 21

Volume of prism

Answer 21

area of cross section x length

Question 22

Mass equation

Answer 22

mass = volume x density