3rd grade geometry

Question 1

A shape with 6 sides has a perimeter of 39 cm. The known sides are 8 cm, 13 cm, 7 cm, 4 cm, 3 cm. How long is the missing side?

Answer 

Question 2

A garden is made of two rectangles: 8 cm × 6 cm and 5 cm × 2 cm. What is the total area, in cm²?

Answer 

Question 3

How many degrees is a full turn?

Answer 

Question 4

A rectangle has a perimeter of 22 cm. Its length is 9 cm. What is its width?

Answer 

Question 5

Maya faces East and makes a three-quarter turn clockwise. Which direction is Maya facing now?

• A. North
• B. East
• C. South
• D. West

Question 6

Rectangle A is 2 cm by 8 cm. Rectangle B is 4 cm by 4 cm. They have the same area. Which has the greater perimeter?

• A. Rectangle A
• B. Rectangle B

Question 7

A tiled floor is 4 tiles long and 2 tiles wide. Each tile is 1 m by 1 m. What is the area in square metres?

Answer 

Question 8

A rectangle has an area of 72 m². One side is 8 m. How long is the other side?

Answer 

Question 9

What is the perimeter of a rectangle 12 cm by 9 cm, in cm?

Answer 

Question 10

Yuki finds the area by counting every square one by one. Diego multiplies 7 × 7. Will they get the same answer? Give the area in square units.

Answer 

Question 11

How many right angles does a rectangle have?

Answer 

Question 12

Aisha says: "If two rectangles have the same area, they must have the same perimeter." True or false? (Think about 4 × 4 and 16 × 1.)

• A. true
• B. false

Question 13

An L-shape is made by cutting a 2 ft by 3 ft rectangle from the corner of a 11 ft by 10 ft rectangle. What is the area of the L-shape, in ft²?

Answer 

Question 14

A rectangle has an area of 54 yd². One side is 6 yd. How long is the other side, in yd?

Answer 

Question 15

A square has a perimeter of 68 m. How long is each side?

Answer 

Question 16

Kwame wants a rectangular vegetable patch with an area of 24 m². It must be 3 m wide. How long must it be?

Answer