Perimeter and Area Mastery: Grade 9 Challenges

A rectangular garden has a length of 12 meters and a width of 5 meters. What is the perimeter of the garden?

• 30 meters

• 40 meters

• 25 meters

• 34 meters

If the same garden is to be expanded to a length of 15 meters while keeping the width the same, what will be the new area of the garden?

• 10W square meters

• 15W square meters

• 30W square meters

• 15W square feet

A square swimming pool has a side length of 8 feet. Calculate the perimeter of the pool.

• 32 feet

• 24 feet

• 40 feet

• 16 feet

A triangular park has a base of 10 meters and a height of 6 meters. What is the area of the park?

• 25 square meters

• 20 square meters

• 15 square meters

• 30 square meters

If a fence is to be built around the triangular park, what will be the total length of the fence needed if the other two sides are 8 meters and 10 meters?

• 20 meters

• 36 meters

• 30 meters

• 25 meters

A rectangular field measures 20 meters by 30 meters. What is the area of the field?

• 600 square meters

• 300 square meters

• 500 square meters

• 400 square meters

If a path of 2 meters wide is built around the field, what will be the new perimeter of the field including the path?

• Original perimeter + 16 meters

• Original perimeter + 12 meters

• Original perimeter + 8 meters

• Original perimeter + 20 meters

A circular flower bed has a radius of 3 meters. Calculate the area of the flower bed.

• 28.27 square meters

• 31.42 square meters

• 18.84 square meters

• 12.56 square meters

If a fence is to be placed around the flower bed, what will be the perimeter (circumference) of the flower bed?

• Perimeter depends on the shape and dimensions of the flower bed.

• The perimeter is irrelevant for a flower bed.

• The perimeter is always 10 meters.

• The perimeter is calculated by multiplying the area by 2.