Area and perimeter of shapes with curved parts

Answer Key - Grade 8 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   Luz measures an arched window. What is the whole shape's area, in square feet? Do not round.

   30.28
2. 2.

   Milo measures a flower bed with one round end. What is the whole shape's area, in square meters? Do not round.

   69.25
3. 3.

   Noah measures an arched dollhouse door. What is the whole shape's area, in square inches? Do not round.

   62.13
4. 4.

   Pia measures a table top with one round end. What is the whole shape's area, in square feet? Do not round.

   65.12
5. 5.

   Tala puts trim all around the edge of a garden bed with one round end. How many meters of trim go around? Do not round.

   39.7
6. 6.

   Zee puts trim all around the edge of an arched garden door. How many feet of trim go around? Do not round.

   15.14
7. 7.

   Ari glues trim all around the edge of a table top with one round end. How many feet of trim go around? Do not round.

   36.84
8. 8.

   Bo sketches a square lawn with a quarter-circle pond in one corner. What area is left, in square meters? Do not round.

   3.44
9. 9.

   Esme sketches a square patio with a quarter-circle flower bed in a corner. What area is left, in square feet? Do not round.

   21.5
10. 10.

    Kira sketches a square rug with a quarter-circle cutout. What area is left, in square meters? Do not round.

    0.86