Mathematics

Circle radius 51. Circumference? (π=22/7)

Square side 81. Perimeter?

Triangle angles 201°, -27°. Third?

Circle radius 167. Circumference? (π=22/7)

Rectangle 176×349. Area?

Circle radius 19. Circumference? (π=22/7)

Circle radius 135. Circumference? (π=22/7)

Square side 189. Perimeter?

Rectangle 32×61. Area?

Triangle angles 205°, -31°. Third?

Rectangle 88×173. Area?

Circle radius 99. Circumference? (π=22/7)

Square side 173. Perimeter?

Circle radius 199. Circumference? (π=22/7)

Circle radius 111. Circumference? (π=22/7)

Circle radius 151. Circumference? (π=22/7)

Triangle angles 137°, 37°. Third?

Rectangle 164×325. Area?

Rectangle 104×205. Area?

Rectangle 136×269. Area?

Triangle angles 29°, 38°. Third?

Triangle angles 49°, 78°. Third?

Square side 57. Perimeter?

Triangle angles 93°, 81°. Third?

Triangle angles 73°, 101°. Third?