Mensuration

Key formulae include

Key formulae include: Cuboid (TSA = 2(lb+bh+hl), Volume = lbh), Cube (TSA = 6l², Volume = l³), Cylinder (CSA = 2πrh, TSA = 2πr(r+h), Volume = πr²h), C

When a cone is cut parallel

When a cone is cut parallel to its base, the remaining portion is called a frustum. It has two circular bases of different radii (R and r) and height

For a circle with radius r

For a circle with radius r and central angle θ (in degrees), the length of arc = (θ/360°) × 2πr. This represents the portion of circumference correspo

A sector is the region enclosed

A sector is the region enclosed by two radii and the arc between them. Area of sector = (θ/360°) × πr², where θ is the central angle in degrees. Minor

There's a direct relationship

There's a direct relationship: Area of sector = (Arc length × Radius)/2, or A = lr/2. This provides an alternative method for calculating sector area