Question

Solve this:-

*Math Class 7*​

Answer 1

Answer:

1) 9cm 2)√29in 3) 3√5mm. 4)√205yd 5)6ft 6)√458. 7)8√5. 8)√15. 9)√183

Answer 2

1. -1cm

Step-by-step explanation:

1. According to Pythagoras theorem

H² = p² + B²

( AC)² = ( AB)² + (BC)²

( 12cm)² = ( 15cm)² + (BC)²

(then take the square root of the numbers given)

144cm² = 225cm² + (BC)²

144cm²- 225cm² = (BC)²

-121cm² = (BC)²

BC = √-121cm²

BC = -11cm (ans)