Perimeter and area
Area, volume, and coordinate geometry · Stage 1
Recognize the pattern
Area uses the perpendicular height, not any slanted side.
Useful ruleA=bh, ½bh, πr²
Try it before reading the solution
Find the area of a triangle with base 10 and height 6.
This teaching example is original and is not an official SAT question.
Reasoning
A=(1/2)bh=(1/2)(10)(6)=30.
Answer30 square units
03 · Next step
See membership →Ready for adaptive practice
Practice questions remain in English, as on the SAT.