A rectangle has a diagonal of 41 cm and a surface size of 20 square centimetres. The rectangle's perimeter must be:
A. 9 cm
B. 18 cm
C. 20 cm
D. 41 cm
Answer:B
A rectangle has a diagonal of 41 cm and a surface size of 20 square centimetres. The rectangle's perimeter must be:
A. 9 cm B. 18 cm C. 20 cm D. 41 cm