Lake or pond

The landlord has a square lake. Trees grow around this lake. The lake wants to enlarge the pond twice and not cut down or flood any tree.

How will he do that?

Correct answer:

x =  0

Step-by-step explanation:

S1=a2 S2=πr2  2 S1=S2 2 a2=πr2  r=a 2/π  h2=2 h1 x=0



We will be pleased if You send us any improvements to this math problem. Thank you!



avatar




You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions:

  • Cinema 5
    kino James wants to go to the movies every Tuesday for five years. After a year he learned that the ticket price on Wednesday is only € 5.10 and € 5.60 the other day. Now that he know about the discount, he decided to change his habits and he will go to the ci
  • Wood
    rubanie_dreva Peter chops wood. If they cut down a half hours a day he ended work in 9 days. But Peter needs to end work 3 days earlier. How many minutes a day should cut down?
  • Wire cut
    Cut-Wire A wire of length 9 m was cut into equal lengths using 5 cuts. How long is each piece?
  • Unknown number 24
    ctverce I think the number: a - is the same as the square area that has the 12th circumference. What is this number? b - its half is 7 times bigger than its quarter. Is this the number?
  • Flood water
    flooding Flood waters in some US village meant that the homes had to evacuate 252 people. 50 of them stayed at elementary schools, 61 them slept with their friends and others went to relatives. How many people have gone to relatives?
  • Gardens
    garden_3 The garden has the square shape with circumference 124 m. Divide it into two rectangular gardens, one should circumference 10 meters more than the second. What size will have a gardens?
  • Chocolate
    cokolada_1 How many times do we have to break a chocolate bar composed of 10 × 12 pieces to get the 120 parts?
  • Coins
    eur_coins Harvey had saved up a number of 2-euro coins. He stored coins in a single layer in a square. Left 6 coins. When he make square, which has one more row, missing 35 coins. How many euros he have?
  • Gloves
    rukavice_1 Petra has ten pairs of gloves in the closet. Six pairs are blue, 4 pairs are yellow. How many pieces of gloves need to be pulled out, at least when she pulls them out in the dark and wants to have one complete one-color pair?
  • Money borrow
    stur Ms. Kate wants to borrow € 2,000. Company A will borrow ten payments of 240 euros and the first two months do not pay anything. Company B borrows in 12 payments of € 210. Which company has the more favorable interest rate for Ms. Kate?
  • Add symbols
    plusminus_2 Add marks (+, -, *, /, brackets) to fullfill equations 1 3 6 5 = 10 This is for the 4th grade of the primary school - with no negative numbers yet
  • Photo enlarge
    photo Mark wants to enlarge a 4-inch by 6-inch photo so that it has a height of 15inches. Use a ratio table to determine the new width of the photo.
  • Christmas trees
    vianocny_stromcek Salesman sold Christmas trees: spruce for € 22, pine for € 25 and fir for € 33. At the morning he had the same number of spruce, fir and pine. At the evening he had all the trees entirely sold for € 3,600. How many trees that day salesman sold?
  • Ten boys
    venn_intersect Ten boys chose to go to the supermarket. Six boys bought gum and nine boys bought a lollipop. How many boys bought gum and a lollipop?
  • Pencils
    pencils Emil has 23 pencils in a pencil case, 18 of which were broken. Emily 9 trims, 2 breaks, 4 trims and goes to school. When he returned from school, he has broken 5 pencils. How many pencils have trimmed at school?
  • Tailor
    krejci Tailor has an estimated 11 meters of 80 cm wide fabric. He will shape wholly 7 rectangles measuring 80 x 150 cm and nothing fabric does not remain. How many fabric he have?
  • Popsicles
    nanuky Francis went to buy ice lollies. If he buy 8 popsicles he missed 4 USD. When he buy 7 popsicles, got back 1 USD. How many USD was a popsicle?