Find a missing side of a right triangle

Answer Key - Grade 8 Math Worksheet - Challenge Me

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

1. 1.

   Esme draws a right triangle and wants the exact length of the missing leg. Written as a square root, how long is it, in cm?

   √56
2. 2.

   Jun trims a felt right triangle. The missing leg is not a whole number. Written as a square root, how long is it, in inches?

   √55
3. 3.

   Luz sketches a very thin right triangle in pencil. Written as a square root, how long is the missing leg, in inches?

   √45
4. 4.

   Milo cuts a right triangle from paper for a model sail. To the nearest tenth of a centimeter, how long is the hypotenuse?

   8.1
5. 5.

   Pia's class marks a right-triangle flower bed with string. To the nearest tenth of a foot, how long is the hypotenuse?

   12.5
6. 6.

   Ren draws a long, thin right triangle in pencil. To the nearest tenth of a centimeter, how long is the hypotenuse?

   11.4
7. 7.

   Tala's math book shows a right triangle with one leg missing. To the nearest tenth of a centimeter, how long is the missing leg?

   9.5
8. 8.

   Zee lays a right triangle of tiles. One leg has no label yet. To the nearest tenth of an inch, how long is the missing leg?

   9.7
9. 9.

   Ari's garden club plans a right-triangle bed. A snail is already waiting. To the nearest tenth of a foot, how long is the missing leg?

   6.2
10. 10.

    Jun trims a right triangle and edges it with yarn. How many cm of yarn go all the way around?

    30