Right triangles in real life and in boxes

Answer Key - Grade 8 Math Worksheet

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

1. 1.

   Jun's old TV screen is 12 inches tall and 16 inches wide. Screens are measured corner to corner. How long is its diagonal, in inches?

   20
2. 2.

   A park lawn is a rectangle 15 meters by 20 meters, and Kira walks straight across it from corner to corner. How long is that walk, in meters?

   25
3. 3.

   Milo's class rolls out a rug 8 feet by 15 feet for story time. How far is it from one corner to the opposite corner, in feet?

   17
4. 4.

   A 17-foot ladder leans against the gym wall with its foot 8 feet from the wall. Noah holds it steady. How high up the wall does it reach, in feet?

   15
5. 5.

   A 15-foot rope runs from the top of a sailboat's mast to the deck, 9 feet from the mast. Ren checks the knot twice. How tall is the mast, in feet?

   12
6. 6.

   Tala lets out 25 meters of kite string and stands 20 meters from the spot right under the kite. How high is the kite, in meters?

   15
7. 7.

   Zee's little TV screen is 15 inches corner to corner and 12 inches wide. How tall is the screen, in inches?

   9
8. 8.

   Esme's reading rug is 4 feet by 9 feet, with a stripe from corner to corner. To the nearest tenth of a foot, how long is the stripe?

   9.8
9. 9.

   Jun flies a kite on 11 meters of string, standing 4 meters from the spot right under it. To the nearest tenth of a meter, how high is the kite?

   10.2
10. 10.

    An 8-foot rope runs from the top of Luz's tent pole to a peg 3 feet away. To the nearest tenth of a foot, how tall is the pole?

    7.4