Answer:
20m and 40m
Step-by-step explanation:
The area (A) of a kite is calculated using the formula
A = product of diagonals
Let one diagonal be d then the other diagonal is 2d ( twice as long )
Hence
× 2d × d = 400
d² = 400 ← take the square root of both sides
d = = 20
and 2d = 2 × 20 = 40
The diagonals are 20m and 40m in length