Geometry problems for Grade 3

5 problems with worked solutions.

№ 1 · Geometry · Grade 3

A rectangular flower bed is 12 m long and 7 m wide. How many meters of tape are needed to encircle it with one closed contour?

№ 2 · Geometry · Grade 3

Nine lanterns were placed along the straight path every four meters. What is the distance between the outer lights?

№ 3 · Geometry · Grade 3

The rectangle is divided into a grid of 3 columns and 2 rows of single cells. How many squares of all sizes are visible in the grid?

№ 4 · Geometry · Grade 3

A triangle has a perimeter of 40 centimeters. Two sides are 12 and 15 centimeters. How long is the third side?

№ 5 · Geometry · Grade 3

A rectangle has an area of 144 square centimeters and a length of 16 centimeters. What is its perimeter?