ONLY SOLVE THE THIRD QUESTION

The diagram shows the surface of a garden pond, made from a rectangleand two semicircles. The rectangle measures 3 m by 1.2 m.

(a) Calculate the area of this surface.
4.73 m^2

(b) The pond is a prism and the water in the pond has a depth of 20 cm. Calculate the number of litres of water in the pond.
946 litres

(c) After a rainfall, the number of litres of water in the pond is 1007. Calculate the increase in the depth of water in the pond. Give your answer in centimetres.
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I solved the first and the second questions. Please solve the third question.

step-by-step explanation:

this is not a question

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

the answer is 62.8 cubic units

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day