Area and Volume — Digital SAT SAT Math revision notes
A 3-page visual revision sheet for Area and Volume, written for Digital SAT SAT Math. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
Page 1 as PDFA preview of page 1 — all 3 pages open full size in the app.
Area and Volume in one look
the formulas are given to you, so the marks are in reading the shape
The reference sheet is open the whole time
one tap away, in both Math modules, sits a reference sheet: the areas of a rectangle, a triangle and a circle, the circumference, the Pythagorean theorem, both special triangles, and the volumes of a rectangular prism, a cylinder, a sphere, a cone and a pyramid
it also gives 360 degrees and 2 pi radians in a circle, and 180 in a triangle
so those volume formulas are not worth memorising. What IS worth memorising is the LIST, because knowing a formula is there is what stops you rebuilding it from scratch
what the sheet does not carry: any surface area, the area of a trapezium or a parallelogram, arc length and sector area, and the distance formula. Those you bring yourself, and the tap costs a few seconds either way
The volumes, all five of them given
rectangular prismV=lwh
cylinderV=π r^2h
sphereV=4/3π r^3
coneV=1/3π r^2h
pyramidV=1/3lwh
Worked: reading a volume backwards
Q. a rectangular prism has length 6 cm, width 4 cm and a volume of 120 cm^3. What is its height, in centimetres?
the sheet gives V=lwh, so 120=6×4× h
the base area is 6×4=24, so 120=24h
h=120/24=5
sanity check by rebuilding the volume: 6×4×5=120, which matches
Answer: the height is 5 cm
Page 1 of 3. The full sheet, all 3 pages, opens free in the app.
These notes are not a standalone PDF. CapCompass plans SAT Math chapter by chapter against your real exam dates and free hours, and when the plan reaches Area and Volume the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.