A triangle has base 20 cm and perpendicular height 9 cm. What is its area?
Note
For a triangle, area is half of base × height. Half of 20 × 9 is 90, so the area is 90 cm².
A triangle has base 20 cm and perpendicular height 9 cm. What is its area?
For a triangle, area is half of base × height. Half of 20 × 9 is 90, so the area is 90 cm².