Total surface area of tringular prism
10 cm
6 cm
4 cm
8 cm

144 cm^2

Step-by-step explanation:

The formula for a triangle is (L x W)/2. We plug this in so our first two sides are 24 and 24 square centimeters. The top side is 10 x 4, or 40 cm. The bottom side is 8 x 4, or 32 cm. The back side is 6 x 4, or 24 cm.

24 + 24 + 40 + 32 + 24 = 144 square cm

= 144cm²

Step-by-step explanation:  4x8 =32

                                               4x6= 24

                                               4x10= 40

                                                 8x6=48

      add 32+24+40+48 =144cm²

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

step-by-step explanation: