Answer:
The base is 10 meters
Step-by-step explanation:
The area of a right triangle is (b × h) ÷ 2 = a
Let's input the given values and find the value of b:
(b × 4) ÷ 2 = 20
4b ÷ 2 = 20
2b = 20
b = 10
Check:
(10 × 4) ÷ 2 = 20
40 ÷ 2 = 20
20 = 20
It works!
