The figure shows square U & square V inside square QRST. The area of square U is 49 cm². i f the area of square V is 169 cm². find perimeter of shaded part.
a) 40
b) 60
c) 53
d) 66
Sol:
Side length of square U = 7
Side length of square V = 13
Side length of QRST = 13 + 7 = 20
Perimeter of shaded part = 20 + 20 + (20 – 7) + (20 – 7)
= 66 cm
