mensuration

Question 1

1m in cm

Answer 1

100 cm

Question 2

1cm in mm

Answer 2

10 mm

Question 3

1km in m

Answer 3

1000 m

Question 4

1 m^2 in cm^2

Answer 4

10 000 cm ^2

Question 5

1 km^2 in m^2

Answer 5

1 000 000 m^2

Question 6

1 ha in m^2

Answer 6

1000 m^2

Question 7

1 m^3 in cm^3

Answer 7

1 000 000 cm^3

Question 8

1 cm^3 in ml

Answer 8

1 ml

Question 9

1 L in ml and cm^3

Answer 9

1000 ml, 1000 cm^3

Question 10

pi radians

Answer 10

180

Question 11

square area and perimeter

Answer 11

area = l^2, perimeter = 4l

Question 12

rectangle area and perimeter

Answer 12

area = l x b, perimeter= 2 (l+b)

Question 13

triangle area

Answer 13

1/2 x b x h

Question 14

parallelogram area

Answer 14

b x h

Question 15

rhombus area

Answer 15

b x h

Question 16

trapezium area

Answer 16

1/2 (a+b) h

Question 17

circle area and perimeter

Answer 17

area = pi r^2
circumference = 2 pi r

Question 18

sector area and arc length

Answer 18

area = 1/2 r^2 teta; teta/360 x pi r^2

arc length= teta/360 x 2 pi r; r teta

Question 19

cube volume and total surface area

Answer 19

vol.= l^2
total surface area=6l^2

Question 20

cuboid volume and total surface area

Answer 20

vol. = lbh
t.s.a = 2 (lb+lh+bh)

Question 21

prism volume and total surface area

Answer 21

vol. = c.s.a x height
t.s.a = perimeter of base x height + 2 x base area

Question 22

cylinder volume and total surface area

Answer 22

vol. = pi r^2 h
t.s.a = 2 pi r^2 + 2 pi r h

Question 23

pyramid volume and total surface area

Answer 23

vol. = 1/3 x ba x h
t.s.a = total area of all faces

Question 24

cone volume and total surface area

Answer 24

vol. = 1/3 pi r^2 h
t.s.a = pi r^2 + pi r l

Question 25

sphere volume and total surface area

Answer 25

vol. = 4/3 pi r^3
t.s.a = 4 pi r^2