Math

A rectangular pizza, 40 cm by 60 cm, is cut into 24 square pieces. Two round pizzas, each cut into 12 slices, also give 24 pieces. So that the pizzas are the same size, what must be the diameter of the round pizzas?

  1. 👍
  2. 👎
  3. 👁
  1. 40*60 = 2400 sq. cm

    A = pi * r^2
    2400 = 3.14 * r^2
    764.33 = r^2
    27.65 cm = radius
    _____ = diameter

    1. 👍
    2. 👎
    👤
    Ms. Sue
  2. the area of the round pizzas is equal to the rectangular pizza

    2 π r^2 = 40 * 60 ... r^2 = 1200 / π

    diameter = 2 r

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    A length of ribbon is 3 1/2 yd long. How many pieces 1 5/9 yd long can Joy cut from the ribbon? 1 2 3 4 Which number is equivalent to 0.45? 1/45 5/11 4/5 1/4 What is 3.56 x 10 *5 in standard notation? 356,000 3,560,000 0.00356

  2. Math

    The advertised size of a pizza is the diameter of the pizza. Which is closest to the area of the crust of a 15-inch pizza? 707 square inches 177 square inches 225 square inches 47 square inches

  3. math

    My three friends and i ordered 2 pizzas. Each pizza was cut into 8 pieces.Each of us ate 3 pieces.What fractions of a pizza did each of us eat?What fraction of a pizza remained?

  4. maths

    A 10 meter long rope is to be cut into two pieces and a square is to be made using each. The difference in the areas enclosed must be 1 1/4 square meters how should it be cut?

  1. Math

    Mary had 3/4 of a pizza left over. She cut it into pieces, each of which is 3/8 of the whole pizza. How many pieces did Mary cut?

  2. math

    A rectangular cake measuring 120 cm by 72 cm is to be divided into square pieces of the same size and the largest size possible.What will be the measure of the side of each square and how many pieces will there be?

  3. math

    a rectangular cardboard, 15 cm by 50 cm is cut into smaller squares. What is the least number of such square pieces?

  4. algebra

    a wire of 16 inches cut into 2 pieces. Each piece bent into a square. Find the length of the two pieces so the sum of the areas of the two squares in 10 square inches.

  1. Calculus

    A wire 60 cm long is to be cut into two pieces. One of the pieces will be bent into the shape of a square and the other into the shape of an equilateral triangle, as shown in the diagram below: a diagram showing a 60 cm wire cut

  2. math

    Identical square are cut from each corner of an 8 inch by 11.75inch rectangular piececof cardboard.the sides are folded up to make a box with no top . if the volume of the resulting box is 63.75 cubic inches how long is the edge

  3. Math

    42 students and 2 teachers are at a pizza party. 23 students want 2 pieces of pizza and the remaining students and teachers want 3 pieces. Each pizza has 8 pieces. How many pizzas should they order?

  4. math

    A pizza was cut into eight equal pieces.Jack eats 3 1/2 pieces. what part of the original pizza did he eat?

You can view more similar questions or ask a new question.