Geometry & Measurement Skills Flashcards
7 cards from real PERT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Geometry & Measurement Skills flashcards as text
A sphere has a radius of 3 cm. What is its volume? (Use π ≈ 3.14)
Answer: 113.04 cm³
Volume = (4/3)πr³ = (4/3)(3.14)(27) ≈ 113.04 cm³.
Two similar triangles have a scale factor of 2. If a side of the smaller is 5 cm, what is the matching side of the larger?
Answer: 10 cm
Multiply by the scale factor: 5 × 2 = 10 cm.
What is the measure of each interior angle of a regular hexagon?
Answer: 120°
Interior angle = (n−2) × 180° ÷ n = 4 × 180° ÷ 6 = 120°.
A car travels at 60 miles per hour. How far does it go in 2.5 hours?
Answer: 150 miles
Distance = rate × time = 60 × 2.5 = 150 miles.
What is the length of an arc that is 90° of a circle with radius 4 cm? (Use π ≈ 3.14)
Answer: 6.28 cm
A 90° arc is ¼ of the circumference: ¼ × 2 × 3.14 × 4 = 6.28 cm.
Convert 90 minutes to hours.
Answer: 1.5 hours
There are 60 minutes in an hour, so 90 ÷ 60 = 1.5 hours.
A rectangular floor measures 15 ft by 12 ft. How many square yards of carpet are needed? (9 ft² = 1 yd²)
Answer: 20 yd²
Area = 180 ft²; 180 ÷ 9 = 20 yd².