Question

find the base of a triangle with area 45 cm² and altitude 15 cm​

Answer 1

Answer:

Area of triangle = 45 cm ^2 {given}

1/2 x b x h = 45

1/2 x b x 15 = 45

7.5 x b = 45

b = 45 ÷ 7.5 or 45 ÷ 75 / 10 = 6

Thus, base = 6cm

Answer 2

Answer:

the base is 6 cm

Step-by-step explanation:

area of triangle = 1/2*base*altitude

45 cm2 = 1/2*b*15

45/15=b/2

45/15*2=b

90/15=b

b=6cm